Definition
CORNER carries two distinct legal meanings that share no conceptual overlap:
1. (Commercial/antitrust law) A coordinated scheme in which a person or group acquires control over the available supply of a commodity or security, withholding it from the market to drive prices to artificially elevated levels. The essential mechanism is the creation of artificial scarcity: by absorbing the greater portion of what is or will be offered for sale, the corner's architects gain pricing power that the ordinary market would not permit. A corner is not merely large-scale buying; it requires the intent and capacity to dominate supply and thereby coerce buyers.
2. (Survey and property law) The point at which two boundary lines meet at an angle; the common terminus of two intersecting lines in a land description. Corners are the reference anchors of metes-and-bounds descriptions and public land survey monuments. A corner may be marked by a physical monument (a post, stone, or iron pin), computed from recorded bearings and distances, or, in older surveys, identified by natural objects. The legal significance of a corner is substantial: when physical monuments and written descriptions conflict, courts generally give priority to monuments actually placed on the ground.
Common Language
Modern common usage (Wiktionary): To drive into a confined space or hopeless situation; to gain sufficient command of a stock or commodity so as to manipulate its price; to navigate a curve.
Historical common usage (Webster's 1913): The point where two converging lines meet; a secluded or out-of-the-way place; any quarter or region.
The everyday sense of "getting cornered" preserves a rough intuition about entrapment that carries over into the commercial-law meaning, but imprecisely. In commercial law, it is the corner operator who achieves dominance — the buyers who must transact at the operator's price are the ones trapped. The surveying sense is a direct technical refinement of the geometric meaning: not merely any angle, but a fixed, legally operative point in a chain of title.
Common Confusion
The two legal senses are entirely separate and context will almost always resolve ambiguity. The commercial-law corner is occasionally conflated with related schemes — engrossing, forestalling, and regrating — which involve similar market-manipulation conduct but differ in historical definition and scope. A corner differs from mere engrossing in that the corner's defining feature is control over supply sufficient to dictate price; engrossing historically described bulk buying alone without requiring that degree of market dominance. See ENGROSSING, FORESTALLING.
In survey law, CORNER should not be confused with MONUMENT (the physical marker placed at a corner) or with BOUNDARY LINE (the line between corners). The corner is the point; the monument is the evidence of the point's location.
Recognized Forms
/SUBTYPES
In commercial law, corners have been described according to their target market:
- Commodity corner: coordinated control of a physical good such as grain, cotton, or pork.
- Stock corner: coordinated acquisition of a company's shares sufficient to squeeze short sellers who must purchase to close their positions.
In public land survey law, corners include:
- Township corner: a corner established by the General Land Office (GLO) survey defining the boundary of a township.
- Section corner: a corner marking the intersection of section lines within a township.
- Quarter-section corner: a corner bisecting a section line, dividing a section into quarter sections.
- Lost corner: a corner whose position cannot be determined from original monuments or reliable evidence and must be re-established by proportionate measurement.
- Obliterated corner: a corner whose original mark cannot be found on the ground but whose position can be established from other evidence.
Why It Matters in Research
For commercial-law research: The corner as an antitrust concept predates the Sherman Act and most of the significant cases arise in 19th-century common law and early statutory sources. Researchers tracing the doctrine will find that what early courts called a "corner" is analyzed under modern competition law as monopolization, market manipulation, or commodity exchange violations — the word corner rarely appears in modern antitrust opinions. When reading 19th-century commercial cases, be alert to the overlap with forestalling and engrossing, which were criminal offenses at common law; courts of that era sometimes used these terms interchangeably or in combination with corner. The commercial-law corner connects directly to the development of commodity exchange regulation and securities fraud doctrine.
For property-law research: In metes-and-bounds states, corner identification is frequently the crux of boundary disputes, adverse possession claims, and easement location questions. Historical surveys often describe corners by reference to natural monuments (a white oak tree, a creek bend) that no longer exist. Researchers using 18th- and 19th-century deed records must understand that the legal rule preferring monuments over courses and distances means that locating the original corner — not reading the written description — resolves the boundary. GLO survey records, field notes, and plats held by the Bureau of Land Management are primary sources for public land survey corners in the western United States.
Neither the commercial nor the survey meaning of corner has shifted dramatically in its core definition, but the commercial meaning has largely migrated out of common legal vocabulary into regulatory and exchange-rule language.
Historical Dictionary Support
The sources agree on both core meanings. Black's (both editions) and Anderson's address the commercial meaning; Burrill's addresses the survey meaning exclusively. The sources are complementary rather than competing.
Black's definition of the commercial corner is the most developed, emphasizing the buying-up of supply and the resulting abnormal price advance. Anderson's characterizes the corner explicitly as "gambling speculation" — a framing that reflects 19th-century judicial and popular skepticism of commodity speculation generally and that influenced early common-law treatment of corner contracts as potentially void for public policy reasons. This moral-condemnation framing is largely absent from modern antitrust analysis, which focuses on competitive harm rather than the speculative character of the conduct.
Burrill's survey definition captures the essential technical point — "the common end of two boundary lines which run at an angle with each other" — and his cross-references to Lines and Corners, Butts and Bounds, and Abuttals point researchers toward the constellation of survey-law concepts that accompany corner in historical property sources. What Burrill does not address, and what the other historical dictionaries omit entirely, is the substantial body of law governing lost and obliterated corners — a gap that matters considerably for researchers working with public land survey disputes.
Jurisdictional Note
The survey-law meaning is most technically elaborated in states subject to the Public Land Survey System (PLSS), which covers most of the United States outside the original thirteen colonies and a few other metes-and-bounds states. In PLSS states, federal survey regulations and BLM manuals govern the re-establishment of lost corners. In original metes-and-bounds states (primarily the eastern seaboard), corner law is purely a matter of state common law and deed construction principles.
Encyclopedia Cross-Reference
See Interpretation — Plain Meaning Rule and Four Corners Doctrine (The Law Mind Contracts & Commercial Law Encyclopedia) for the related but distinct "four corners" concept in contract interpretation, which uses corner in its spatial/document-boundary sense to describe the rule that a written instrument must be interpreted from its own text alone.