FLAT

10 definitions found across Law Mind sources

FLATAuthored
The Law Mind • 1044 words
Definition
"Flat" carries two distinct legal meanings in American law, addressed separately below. 1. TIDAL FLAT (water law / property law): A place covered with shallow water — typically along the edge of an arm of the sea, bay, tidal river, cove, creek, or harbor — that is too shallow for navigation by vessels ordinarily used for commercial purposes. The term commonly describes the zone between high and low water mark, land that is periodically exposed and submerged with tidal movement. Ownership of tidal flats is a significant question in coastal property law, touching on public trust doctrine, littoral rights, and state versus private title. 2. RESIDENTIAL OR COMMERCIAL FLAT (property law): A floor or separate division of a floor of a building, fitted for housekeeping or business use, designed to be occupied as a single unit. In this sense, a flat is legally treated as a house for most purposes, even though colloquially it may be distinguished from a freestanding dwelling. A building subdivided into multiple such units may also be called a flat-building. ---
Common Language
Modern common usage (Wiktionary): "Flat" functions as adjective, noun, and adverb across many registers. As an adverb it means completely or exactly ("flat broke," "flat out wrong," "ten seconds flat"). As a noun in British and international English, it means an apartment or self-contained residential unit on a single floor. The adverbial phrase "without parole" is noted as a legal-adjacent usage in Wiktionary (as in "sentenced flat"). Historical common usage (Webster's 1913): Primarily an adjective — having an even, horizontal surface; level; prostrate; fallen. Also used metaphorically for ruin or destruction ("lays cities flat"). The gap between common and legal meaning is significant in both directions. The tidal flat meaning has no obvious common English counterpart — "flat" as shallow coastal water is purely a technical legal and geographic usage that researchers encountering it in historical deeds or riparian cases may not immediately recognize. Conversely, the residential flat meaning aligns with British English but diverges from standard American usage, where "apartment" is the dominant term; American historical sources using "flat" for a dwelling unit may therefore be misread as mere description rather than legal classification. ---
Common Confusion
The two legal meanings of "flat" are entirely unrelated and arise in completely different areas of law. A researcher working in coastal or admiralty property disputes should not conflate the tidal flat (water law) with the residential flat (landlord-tenant or conveyancing law). The context of the surrounding document should disambiguate, but the risk is real in historical sources where the term appears without elaboration. Additionally, "flat" in the tidal sense is sometimes confused with "shoal" (a navigational hazard) or "marsh" (a wetland distinguished by vegetation); the legal distinction turns on navigability and water coverage, not on ecology. ---
Why It Matters in Research
Researchers working with tidal flat entries face the single most important navigational challenge: ownership. The historical legal dictionaries agree that a flat is water too shallow for commercial navigation, but they do not resolve — and were not intended to resolve — whether such land belongs to the state under the public trust doctrine or to the adjacent private landowner. That question is answered by state law and varies significantly. In Massachusetts, for example, colonial ordinances historically vested title to tidal flats in the upland owner to the low water mark (subject to public rights of fishing, fowling, and navigation), a rule that diverged sharply from the English common law default. Research into coastal deeds, grants, and boundary disputes must therefore treat "flat" as a trigger term for jurisdictional inquiry, not a self-resolving description. For the residential flat meaning, the primary trap is historical periodization. "Flat" as a dwelling unit appears more frequently in late-nineteenth and early-twentieth century American legal sources, particularly in urban tenement and landlord-tenant contexts, before "apartment" became the dominant term. Researchers reading cases or statutes from that era should understand that "flat" and "apartment" were often used interchangeably, but "flat" sometimes carried a specific technical sense of a unit on a single floor (as distinguished from a multi-floor dwelling). The Wiktionary note that "flat" can mean "without parole" deserves brief attention: this usage appears in older sentencing records and popular reporting ("sentenced flat" or "doing flat time") but is not a term of art in formal legal doctrine and should not be treated as such in corpus research. ---
Historical Dictionary Support
The historical dictionaries converge firmly on the tidal flat definition. Black's (both editions), Anderson's, and Bouvier's all define flat in water-law terms, with slight variation in emphasis. Black's (1st and 2nd editions) stress navigability — water too shallow for commercial vessels — as the key criterion. Anderson's emphasizes the shallow or shoal character and the geographic location within rivers, coves, creeks, or harbors. Bouvier's is notable for doing double duty: it gives the water-law definition first, then pivots to the residential meaning, quoting the Century Dictionary for the apartment sense and adding the legal conclusion that a flat "is in law a house." This makes Bouvier's the most comprehensive of the four sources on this term. What the historical dictionaries collectively miss is the public trust dimension. None of them engage with the ownership question that makes tidal flats legally contested. They describe what a flat is physically but not who owns it — a gap that reflects the state-specific nature of the doctrine and the general descriptive purpose of legal dictionaries of that era. Researchers should not mistake the confident physical definitions for any resolution of title questions. ---
Jurisdictional Note
The legal significance of tidal flats varies sharply by state. Massachusetts and Maine follow colonial ordinance rules that extend private ownership to the low water mark. Most other coastal states follow the common law rule vesting ownership of the intertidal zone in the state. This variation makes "flat" a jurisdiction-sensitive term in any property or boundary dispute, and researchers should identify the governing state rule before drawing conclusions from cases decided elsewhere. ---
Related Terms
Tidal flat; Foreshore; Intertidal zone; Littoral rights; Riparian rights; Public trust doctrine; Shoal; Low water mark; High water mark; Apartment; Tenement; Dwelling house; Navigability
FLATmain
Black's Law Dictionary • 1891
A place covered with water too shallow for navigation with vessels ordina- rily used for commercial purposes. 34 Conn. 370; 7 Cush. 195.
FLATmain
Anderson's Dictionary of Law • 1890
A place within a river, cove, creek, or harbor, more or less under water; "a shallow or shoal water." 1
FLATmain
Bouvier's Law Dictionary • 1928
When used as a description of anything respecting an arm of the sea means a level place over which the water stands or flows. 34 Conn. 424. A floor or separate division of a floor, fitted for housekeeping and designed to be occupied by a single family. Cent. Dict. A building, the various floors of which are fitted up as flats, either residential or business. A flat is in law a house, though in fact only a part of one in the ordinary sense; L. R. 8 Q. B. D. 423; and the contract between the owner and the occupier is classed among contracts for permissive use." Holland, Jur. 254. The owner of a building who rents flats therein retains control of all portions not actually demised to tenants; [1893] Q. B. 177; 9 Allen 17; he is bound to keep such portions in a reasonable state of repair, and a failure so to do renders him liable in damages; 101 Mass. 251; 106 id. 94; 129 id. 33; 151 id. 162; 81 Me. 318; 67 id. 545; 31 Hun 30: 93 N. Y. 7; 98 id. 635; 127 id. 381; 130 id. 269; 4 C. B. N. S. 556; 3 C. P. 326; but the owner is not an insurer, and when he has constructed his roofs, pipes, or drains with the reasonable foresight com- monly exercised by prudent men, he will not be responsible for a latent defect or an unusual stress of circumstances: 27 Ν. Β. 499; L. R. 6 Ex. 217: 39 N. Y. Sup. Ct. Rep. 246: 5 Q. B. D. 602. Where the upper rooms only are leased, a covenant is im- plied on the part of the lessor to give such rooms the necessary support; 26 N. Y. 498; 28 Mo. App. 116; and he is under a negative duty to do nothing to lessen or decrease such support, or to render it insecure; 50 Hun 181; 46 id. 521. It is the duty of the owner to keep the elevators in a reasonable state of repair, employ competent persons to work them, exercise due regard to the safety of the persons using them, keep the approaches to them properly lighted, and keep the entrance to them on each floor closed when the cage is not at that floor; 3 T. L. R. 500. See ELEVATOR. As regards the furnishing of artificial light in halls and passage-ways, it has been held that in the absence of contractual obligation there is no legal duty on the part of the owner to furnish such light; 26 N. Y. Supp. 801; 131 N. Y. 674; contra, 154 Mass. 235. The janitor, being appointed and remov- able by the owner, is, when engaged in the discharge of his general duties, the landlord's servant. Any particular tenant may sue the owner for damages, if the general services so contracted for are not rendered, but when a janitor is engaged by a tenant on some special service, such tenant becomes dominus pro tempore, and as such he incurs a liability similar to the landlord's; so when he attempts to interfere with or assume the direction of the janitor when the latter is discharging any general duty. See [1893] 1 Ch. 1. In either case his duties and liabilities are regulated by the general principles of the law of Master and Servant (q. v.). The distinction between the tenants of flats and lodgers and guests at a hotel is, that while the latter may have the exclu- sive enjoyment of their lodgings or rooms, they have not, as have the tenants of flats, the exclusive possession; 30 L. J. M. С. 74. See, generally, APARTMENT; LEASE ;
FLATa.
Websters Unabridged Dictionary (1913) • 1913
Having an even and horizontal surface, or nearly so, without prominences or depressions; level without inclination; plane. Though sun and moon Were in the flat sea sunk. Milton. Lying at full length, or spread out, upon the ground; level with the ground or earth; prostrate; as, to lie flat on the ground; hence, fallen; laid low; ruined; destroyed. What ruins kingdoms, and lays cities flat! Milton. I feel . . . my hopes all flat. Milton. Wanting relief; destitute of variety; without points of prominence and striking interest. A large part of the work is, to me, very flat. Coleridge. Tasteless; stale; vapid; insipid; dead; as, fruit or drink flat to the taste. Unanimated; dull; uninteresting; without point or spirit; monotonous; as, a flat speech or composition. How weary, stale, flat, and unprofitable Seem to me all the uses of this world. Shak. Lacking liveliness of commercial exchange and dealings; depressed; dull; as, the market is flat. Clear; unmistakable; peremptory; absolute; positive; downright. Flat burglary as ever was committed. Shak. A great tobacco taker too, -- that's flat. Marston. Below the true pitch; hence, as applied to intervals, minor, or lower by a half step; as, a flat seventh; A flat. Not sharp or shrill; not acute; as, a flat sound. Sonant; vocal; -- applied to any one of the sonant or vocal consonants, as distinguished from a nonsonant (or sharp) consonant. Flat arch. (Arch.) See under Arch, n., 2. (b). -- Flat cap, cap paper, not folded. See under Paper. -- Flat chasing, in fine art metal working, a mode of ornamenting silverware, etc., producing figures by dots and lines made with a punching tool. Knight. -- Flat chisel, a sculptor's chisel for smoothing. -- Flat file, a file wider than its thickness, and of rectangular section. See File. -- Flat nail, a small, sharp-pointed, wrought nail, with a flat, thin head, larger than a tack. Knight. -- Flat paper, paper which has not been folded. -- Flat rail, a railroad rail consisting of a simple flat bar spiked to a longitudinal sleeper. -- Flat rods (Mining), horizontal or inclined connecting rods, for transmitting motion to pump rods at a distance. Raymond. -- Flat rope, a rope made by plaiting instead of twisting; gasket; sennit.
FLATadv.
Websters Unabridged Dictionary (1913) • 1913
In a flat manner; directly; flatly. Sin is flat opposite to the Almighty. Herbert. Without allowance for accrued interest. [Broker's Cant]
FLATn.
Websters Unabridged Dictionary (1913) • 1913
A level surface, without elevation, relief, or prominences; an extended plain; specifically, in the United States, a level tract along the along the banks of a river; as, the Mohawk Flats. Envy is as the sunbeams that beat hotter upon a bank, or steep rising ground, than upon a flat. Bacon. A level tract lying at little depth below the surface of water, or alternately covered and left bare by the tide; a shoal; a shallow; a strand. Half my power, this night Passing these flats, are taken by the tide. Shak. Something broad and flat in form; as: A flat-bottomed boat, without keel, and of small draught. A straw hat, broad-brimmed and low-crowned. A platform on wheel, upon which emblematic designs, etc., are carried in processions. The flat part, or side, of anything; as, the broad side of a blade, as distinguished from its edge. A floor, loft, or story in a building; especially, a floor of a house, which forms a complete residence in itself. A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal. Raymond. A dull fellow; a simpleton; a numskull. [Colloq.] Or if you can not make a speech, Because you are a flat. Holmes. A character [] before a note, indicating a tone which is a half step or semitone lower. A homaloid space or extension.
flatadv
Wiktionary (English) • 2026
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So as to be flat. | Completely, firmly, or unequivocally. | Exactly, precisely. | Used to emphasize the smallness of the measurement. | Without parole. | Completely. | Directly; flatly. | Without allowance for accrued interest.
flatadj
Wiktionary (English) • 2026
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Having no variations in height. | Having no variations in height. | In a horizontal line or plane; not sloping. | Having no variations in height. | Smooth; having no protrusions, indentations or other surface irregularities, or relatively so. | Having no variations in height. | Having small or invisible breasts and/or buttocks. | Without variation in level, quantity, value, tone etc. | Without variation in level, quantity, value, tone etc. | At a consistently depressed level; consistently lacklustre. | Without variation in level, quantity, value, tone etc. | Of fees, fares etc., fixed; unvarying. | Without variation in level, quantity, value, tone etc. | Without variations in pitch. | Without variation in level, quantity, value, tone etc. | Not diphthongal; without variation in height or backness. | Without variation in level, quantity, value, tone etc. | Without variation in tone or hue (uniform), and dull (not glossy). | Lacking liveliness or action; depressed; uninteresting; dull and boring. | Lacking liveliness or action; depressed; uninteresting; dull and boring. | Lacking in depth, substance, or believability; underdeveloped; one-dimensional. | Lowered by one semitone. | Of a note or voice, lower in pitch than it should be. | Absolute; downright; peremptory. | Deflated, especially because of a puncture. | With all or most of its carbon dioxide having come out of solution so that the drink no longer fizzes or contains any bubbles. | Lacking acidity without being sweet. | Unable to emit power; dead. | Without spin; spinless. | Sonant; vocal, as distinguished from a sharp (non-sonant) consonant. | Not having an inflectional ending or sign, such as a noun used as an adjective, or an adjective as an adverb, without the addition of a formative suffix; or an infinitive without the sign "to". | Having a head at a very obtuse angle to the shaft. | Flattening at the ends. | Exact. | Such that the tensor product preserves exact sequences. See Flat module on Wikipedia.Wikipedia. | Such that its target, regarded as a module over its source, is flat (as above). | Such that the induced map on every stalk is flat (as a map of rings). | Having little froth and little milk. | Foolish; simple-minded.
flatnoun
Wiktionary (English) • 2026
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An area of level ground (sometimes covered with shallow or tidal water). | An area of level ground (sometimes covered with shallow or tidal water). | Level ground in general. | An area of level ground (sometimes covered with shallow or tidal water). | Level horse-racing ground, as contrasted with courses incorporating jumps, or the racing done on such ground. | An area of level ground (sometimes covered with shallow or tidal water). | the area in the centre of a racecourse. | An area of level ground (sometimes covered with shallow or tidal water). | The areas behind the line of scrimmage to either side of an offensive football formation. | A note played one chromatic semitone lower than a natural, denoted by the symbol ♭ placed after the letter representing the note (e.g., B♭) or in front of the note symbol (e.g. ♭♪). | A flat tyre/flat tire. | A type of ladies' shoe with a very low heel. | A type of flat-soled running shoe without spikes. | A thin, broad brush used in oil and watercolour painting. | The most prominent flat part of something. | The most prominent flat part of something. | The flat side of a blade, as opposed to the sharp edge. | The most prominent flat part of something. | The palm of the hand, with the adjacent part of the fingers. | A wide, shallow container or pallet. | Ellipsis of flat water (“nonfizzy drinking water”). | A large mail piece measuring at least 8 1/2 by 11 inches, such as catalogs, magazines, and unfolded paper enclosed in large envelopes. | A railroad car without a roof, and whose body is a platform without sides; a platform car or flatcar. | A flat spot on the wheel of a rail vehicle. | A flat-bottomed boat, without keel, and of small draught. | A subset of n-dimensional space that is congruent to a Euclidean space of lower dimension. | A straw hat, broad-brimmed and low-crowned. | A flat sheet for use on a bed. | A flat, glossy children's book with few pages. | A platform on a wheel, upon which emblematic designs etc. are carried in processions. | A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal. | A rectangular wooden structure covered with masonite, lauan, or muslin, often produced in standard modules, that is used to build wall surfaces on stage. Flats can be painted and outfitted with doors and/or windows to depict a building or other part of a scene, and are a hard-surfaced alternative to a backcloth or backdrop. | Any of various hesperiid butterflies that spread their wings open when they land. | An early kind of toy soldier having a flat design. | A dull fellow; a simpleton. | Ellipsis of flat ride (“spinning amusement ride”). | A flat (i.e. plane) mirror | A cheater's die with the edges shaved to make certain rolls more likely. | A 24-case of beer.

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