LEAD - The Law Mind Legal Dictionary

LEADAuthored

The Law Mind • 1206 words

Definition

LEAD carries two distinct legal meanings that share no conceptual relationship beyond the word itself.

1. Lead (procedural/advocacy): The primary counsel on either side of a litigated matter — the attorney charged with principal management and direction of the party's case. To "lead in the cause" means to bear ultimate responsibility for strategy, argument, and courtroom presentation, as distinguished from junior or subordinate counsel who assist but do not control the case. The term appears most often in the phrase "leading counsel," and in some common law traditions the designation carries formal professional significance.

2. Lead (substance/regulatory): The chemical element with atomic number 82 (symbol Pb), a dense, malleable metal historically used in paint pigments, plumbing, gasoline additives, and construction materials. As a legal term of art, "lead" or "lead-based paint" appears across a substantial body of federal and state regulatory, tort, and housing law governing disclosure obligations, remediation duties, and liability for lead-related harm, particularly to children.

Common Language

Modern common usage (Wiktionary): A heavy, pliable, inelastic metal element, having a bright, bluish color; atomic number 82, symbol Pb.

Historical common usage (Webster's 1913): One of the elements, a heavy, pliable, inelastic metal having a bright, bluish color, but easily tarnished; specific gravity 11.37; symbol Pb (L. Plumbum).

Editorial note: For the metal, common and legal usage are essentially continuous — law adopted the ordinary scientific meaning and layered regulatory definitions on top. The procedural meaning (lead counsel) is pure legal usage with no common-language counterpart; the word's ordinary sense of going first or taking charge provides rough intuitive access but does not capture the formal professional role.

Common Confusion

The two meanings of LEAD are functionally unrelated but can produce superficial confusion in legal research when a query term surfaces both procedural sources (discussing lead counsel) and regulatory or tort sources (discussing lead exposure). Researchers should note that "lead" in environmental and housing law almost always refers to the substance, while "lead" in case management, bar admission, or appellate practice sources almost always refers to counsel designation. The word "lead" also appears as a verb in evidentiary contexts — as in "leading question" — which is a third, entirely separate usage governed by the rules of evidence.

Recognized Forms

/SUBTYPES

Lead counsel (advocacy): The senior attorney of record who directs the case. In complex or multi-party litigation, courts may formally designate lead counsel by order, particularly in class actions, multidistrict litigation, and consolidated proceedings.

Lead-based paint (regulatory/tort): Paint or surface coating containing lead in excess of a defined threshold — typically 1.0 mg/cm² or 0.5% by weight under federal standards, though specific thresholds vary by regulatory program. Federal disclosure rules under the Residential Lead-Based Paint Hazard Reduction Act of 1992 (Title X) and EPA rules implementing TSCA address lead-based paint in pre-1978 housing specifically.

Lead paint liability (tort): A distinct cluster of toxic tort claims arising from childhood lead poisoning, including negligence, strict liability, public nuisance, and failure-to-warn theories asserted against manufacturers, landlords, property owners, and government entities.

Why It Matters in Research

For advocacy-related research: The historical dictionaries capture the core concept accurately, but "lead counsel" has acquired additional formal procedural significance in modern practice — particularly in federal courts managing complex litigation. Historical sources will not address court-appointed lead counsel in MDL proceedings or class action contexts, which are governed by procedural rules and standing orders developed in the twentieth century. Researchers using older secondary sources should supplement with modern federal civil procedure materials.

For substance-related research: This is where the term's legal complexity is most pronounced. "Lead" as a regulated substance sits at the intersection of multiple overlapping legal frameworks: federal environmental law (TSCA, CERCLA, Clean Air Act, Clean Water Act), federal housing law (Title X, HUD regulations), state common law tort doctrine, and municipal housing codes. The historical law dictionaries are nearly silent on this dimension — they predate the modern regulatory state and do not anticipate the statutory and administrative law that now dominates lead-related legal questions.

A researcher approaching lead paint litigation will find the historical dictionaries essentially unhelpful and must navigate to twentieth- and twenty-first-century sources: EPA and HUD regulatory materials, state housing statutes, and the evolving tort case law on public nuisance and market-share liability theories. The Anderson's entry for LEAD in the source material is an anomaly — it appears to be a cross-reference list for an entirely different topic, confirming that nineteenth-century legal lexicography had little occasion to treat lead as a legal term of art.

Jurisdictional variation is significant for the substance meaning: state tort law on lead paint liability, particularly public nuisance theories against manufacturers, has diverged sharply across jurisdictions, with some state supreme courts rejecting expansive nuisance claims that others have allowed. Disclosure and remediation obligations also vary considerably between states and municipalities layered on top of the federal floor.

Historical Dictionary Support

Black's (1st and 2nd editions) are in complete agreement on the advocacy meaning, offering nearly identical text: lead counsel is the attorney charged with principal management of the party's case, distinguished from juniors or subordinates. Both editions treat this as self-evidently understood, providing no further elaboration on how the role is established, transferred, or formally recognized. The definition captures the core meaning accurately but is thin by modern standards.

Anderson's Dictionary of Law is unhelpful for this term. The entry attributed to LEAD in the source material appears to be a list of cross-references belonging to an entirely different entry — likely a see-also section misattributed in extraction. It offers no independent definition and should not be relied upon.

None of the historical dictionaries address lead as a chemical substance or regulated material, which is consistent with their period of composition and confirms that the regulatory and toxic tort dimensions of this term are exclusively a product of modern statutory and administrative law.

Jurisdictional Note

For lead counsel designation, federal and state courts vary in how formally they treat the role. Federal MDL courts and class action proceedings often issue explicit lead counsel appointment orders with defined authority; state court practice is more variable. For lead-based paint regulation, the federal framework sets minimum standards, but state and local law frequently impose stricter disclosure, remediation, and liability rules — particularly in older urban jurisdictions with significant pre-1978 housing stock.

Encyclopedia Cross-Reference

Toxic Torts and Environmental Torts — Lead Paint and Lead Poisoning Liability (The Law Mind Torts & Personal Injury Encyclopedia)
TSCA Specific Substances — PCBs, Asbestos, Lead-Based Paint, and PFAS (The Law Mind Environmental & Energy Law Encyclopedia)

LEADmain

Black's Law Dictionary • 1891

The counsel on either side of a litigated action who is charged with the prin- cipal management and direction of the party's case, as distinguished from his juniors or subordinates, is said to "lead in the cause," and is termed the "leading counsel" on that side.

LEADmain

Black's Law Dictionary (2nd Ed.) • 1910

The counsel on either side of a litigated action who is charged with the principal management and direction of the party’s case, as distinguished from his juniors or subordinates, is said to “lead in the cause,” and is termed the “leading counsel” on that side. ;

LEADmain

Anderson's Dictionary of Law • 1890

ION; FORUM; JUDGE; JUDGMENT; JURY; LAWFUL; LAWYER; LEARNED; OUTLAW; PLACE, 1; PRESCRIPTION, 1; PROTECTION; PROVIDED; RELIGION; REPEAL; RETROSPECTIVE; RIGHT; ROAD, 1; SANCTION; TECHNICAL; UNIFORM.

LEADn.

Websters Unabridged Dictionary (1913) • 1913

One of the elements, a heavy, pliable, inelastic metal, having a bright, bluish color, but easily tarnished. It is both malleable and ductile, though with little tenacity, and is used for tubes, sheets, bullets, etc. Its specific gravity is 11.37. It is easily fusible, forms alloys with other metals, and is an ingredient of solder and type metal. Atomic weight, 206.4. Symbol Pb (L. Plumbum). It is chiefly obtained from the mineral galena, lead sulphide. An article made of lead or an alloy of lead; as: A plummet or mass of lead, used in sounding at sea. Sheets or plates of lead used as a covering for roofs; hence, pl., a roof covered with lead sheets or terne plates. I would have the tower two stories, and goodly leads upon the top. Bacon A small cylinder of black lead or plumbago, used in pencils. Black lead, graphite or plumbago, ; -- so called from its leadlike appearance and streak. [Colloq.] -- Coasting lead, a sounding lead intermediate in weight between a hand lead and deep-sea lead.  -- Deep-sea lead, the heaviest of sounding leads, used in water exceeding a hundred fathoms in depth. Ham. Nav. Encyc.  -- Hand lead, a small lead use for sounding in shallow water.  -- Krems lead, Kremnitz lead Etym: [so called from Krems or Kremnitz, in Austria], a pure variety of white lead, formed into tablets, and called also Krems, or Kremnitz, white, and Vienna white.  -- Lead arming, tallow put in the hollow of a sounding lead. See To arm the lead (below).  -- Lead colic. See under Colic.  -- Lead color, a deep bluish gray color, like tarnished lead.  -- Lead glance. (Min.) Same as Galena.  -- Lead line (a) (Med.) A dark line along the gums produced by a deposit of metallic lead, due to lead poisoning. (b) (Naut.) A sounding line.  -- Lead mill, a leaden polishing wheel, used by lapidaries.  -- Lead ocher (Min.), a massive sulphur-yellow oxide of lead. Same as Massicot.  -- Lead pencil, a pencil of which the marking material is graphite (black lead).  -- Lead plant (Bot.), a low leguminous plant, genus Amorpha (A. canescens), found in the Northwestern United States, where its presence is supposed to indicate lead ore. Gray.  -- Lead tree. (a) (Bot.) A West Indian name for the tropical, leguminous tree, Leucæna glauca; -- probably so called from the glaucous color of the foliage. (b) (Chem.) Lead crystallized in arborescent forms from a solution of some lead salt, as by suspending a strip of zinc in lead acetate.  -- Mock lead, a miner's term for blende.  -- Red lead, a scarlet, crystalline, granular powder, consisting of minium when pure, but commonly containing several of the oxides of lead. It is used as a paint or cement and also as an ingredient of flint glass.  -- Red lead ore (Min.), crocoite.  -- Sugar of lead, acetate of lead.  -- To arm the lead, to fill the hollow in the bottom of a sounding lead with tallow in order to discover the nature of the bottom by the substances adhering. Ham. Nav. Encyc.  -- To cast, or heave, the lead, to cast the sounding lead for ascertaining the depth of water.  -- White lead, hydrated carbonate of lead, obtained as a white, amorphous powder, and much used as an ingredient of white paint.

LEADv.

Websters Unabridged Dictionary (1913) • 1913

To cover, fill, or affect with lead; as, continuous firing leads the grooves of a rifle. To place leads between the lines of; as, to lead a page; leaded matter.

LEADv.

Websters Unabridged Dictionary (1913) • 1913

To guide or conduct with the hand, or by means of some physical contact connection; as, a father leads a child; a jockey leads a horse with a halter; a dog leads a blind man. If a blind man lead a blind man, both fall down in the ditch. Wyclif (Matt. xv. 14.) They thrust him out of the city, and led him unto the brow of the hill. Luke iv. 29. In thy right hand lead with thee The mountain nymph, sweet Liberty. Milton. To guide or conduct in a certain course, or to a certain place or end, by making the way known; to show the way, esp. by going with or going in advance of. Hence, figuratively: To direct; to counsel; to instruct; as, to lead a traveler; to lead a pupil. The Lord went before them by day in a pillar of a cloud, to lead them the way. Ex. xiii. 21. He leadeth me beside the still waters. Ps. xxiii. 2. This thought might lead me through the world's vain mask. Content, though blind, had I no better guide. Milton. To conduct or direct with authority; to have direction or charge of; as, to lead an army, an exploring party, or a search; to lead a political party. Christ took not upon him flesh and blood that he might conquer and rule nations, lead armies, or possess places. South. To go or to be in advance of; to precede; hence, to be foremost or chief among; as, the big sloop led the fleet of yachts; the Guards led the attack; Demosthenes leads the orators of all ages. As Hesperus, that leads the sun his way. Fairfax. And lo ! Ben Adhem's name led all the rest. Leigh Hunt. To draw or direct by influence, whether good or bad; to prevail on; to induce; to entice; to allure; as, to lead one to espouse a righteous cause. He was driven by the necessities of the times, more than led by his own disposition, to any rigor of actions. Eikon Basilike. Silly women, laden with sins,led away by divers lusts. 2 Tim. iii. 6 (Rev. Ver.). To guide or conduct one's self in, through, or along (a certain course); hence, to proceed in the way of; to follow the path or course of; to pass; to spend. Also, to cause (one) to proceed or follow in (a certain course). That we may lead a quiet and peaceable life. 1 Tim. ii. 2. Nor thou with shadowed hint confuse A life that leads melodious days. Tennyson. You remember . . . the life he used to lead his wife and daughter. Dickens. To begin a game, round, or trick, with; as, to lead trumps; the double five was led. To lead astray, to guide in a wrong way, or into error; to seduce from truth or rectitude.  -- To lead captive, to carry or bring into captivity.  -- To lead the way, to show the way by going in front; to act as guide. Goldsmith.

leadnoun

Wiktionary (English) • 2026

Wiktionary contributors • CC BY-SA 4.0 • via Kaikki
Extracted and formatted for display by Law Mind. Source link opens the current Wiktionary page and its contributor history; it is not a frozen copy of this extract.

A heavy, pliable, inelastic metal element, having a bright, bluish color, but easily tarnished; both malleable and ductile, though with little tenacity. It is easily fusible, forms alloys with other metals, and is an ingredient of solder and type metal. Atomic number 82, symbol Pb (from Latin plumbum). | A plummet or mass of lead attached to a line, used in sounding depth at sea or to estimate velocity in knots. | A thin strip of type metal, used to separate lines of type in printing. | Vertical space in advance of a row or between rows of text. Also known as leading. | Sheets or plates of lead used as a covering for roofs. | A roof covered with lead sheets or terne plates. | A thin cylinder of graphite used in pencils. | Bullets; ammunition. | X-ray protective clothing lined with lead.

leadadj

Wiktionary (English) • 2026

Foremost. | Main, principal, primary, first, chief, foremost.

leadverb

Wiktionary (English) • 2026

Misspelling of led.

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