Law meaning

Frequency:
The definition of law is a set of conduct rules established by an authority, custom or agreement.

An example of law is don't drink and drive.

noun
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(math., logic, etc.) A general principle to which all applicable cases must conform.

The laws of exponents.

noun
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A statement that describes invariable relationships among phenomena under a specified set of conditions. Boyle's law, for instance, describes what will happen to the volume of an ideal gas if its pressure changes and its temperature remains the same. The conditions under which some physical laws hold are idealized (for example, there are no ideal gases in the real world), thus some physical laws apply universally but only approximately.
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A principle of organization, procedure, or technique.

The laws of grammar; the laws of visual perspective.

noun
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Something, such as an order or a dictum, having absolute or unquestioned authority.

The commander's word was law.

noun
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Common law, as distinguished from equity.
noun
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A set of rules or principles dealing with a specific area of a legal system.

Tax law; criminal law.

noun
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An oath, as in the presence of a court. See wager of law.
noun
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The branch of knowledge dealing with such rules; jurisprudence.
noun
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(cricket) One of the official rules of cricket as codified by the MCC.
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(mathematics) A general principle or rule that is assumed or that has been proven to hold between expressions.
noun
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The condition existing when obedience to such rules is general.

To establish law and order.

noun
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(informal, dial.) To take legal action (against)
verb
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A particular such rule.

A new law forbids driving on that road.

noun
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The system by which such statutes and rules are administered.
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(fantasy) One of the two metaphysical forces of the world in some fantasy settings, as opposed to chaos.
noun
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A statement of scientific fact, phenomena, or relationships that occur with unvarying uniformity under given conditions. See also theory.
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A code of principles based on morality, conscience, or nature.
noun
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The system of courts in which such rules are referred to in defending one's rights, securing justice, etc.

To resort to law to settle a matter.

noun
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All such rules having to do with a particular sphere of human activity.

Business law.

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The profession of lawyers, judges, etc.
noun
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Any rule or principle expected to be observed.

The laws of health, a law of grammar.

noun
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Inherent tendency; instinct.

The law of self-preservation.

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(brit., sports) An allowance in distance or time as in a race; handicap.
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The complete body of statutes, rules, enforced customs and norms, and court decisions governing the relations of individuals and corporate entities to one another and to the state.
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The subset of such statutes and other rules and materials dealing with a particular subject matter.
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The profession of interpreting such statutes and rules.
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A bill that becomes effective after enactment by the legislature and signature (or failure to veto) by the executive.
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(uncountable) The body of rules and standards issued by a government, or to be applied by courts and similar authorities.

By law, one is not allowed to own a wallaby in New York City.

noun
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(more generally) A written or understood rule that concerns behaviours and their consequences. Laws are usually associated with mores.

"Do unto others as you wish them to do unto you" is a good law to follow.

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(sciences, strictly) A well-established, observed physical characteristic or behavior of nature. The word is used to simply identify "what happens," without implying any explanatory mechanism or causation. Compare to theory.

Newton's third law of motion states that to every action there is always an equal and opposite reaction. This is one of several laws derived from his general theory expounded in the Philosophiæ Naturalis Principia Mathematica.

noun
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(mathematics) A statement that is true under specified conditions.
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A category of English "common law" petitions that request monetary relief, as opposed to relief in forms other than a monetary judgment; compare to "equity".
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(slang, uncountable) The police.

Here comes the law "” run!

noun
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(Scottish and northern dialectal, archaic) A hill.
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(dated) An exclamation of mild surprise; lawks.
interjection
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A rule of conduct or procedure established by custom, agreement, or authority.
noun
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a law unto (oneself)
  • A totally independent operator:
    An executive who is a law unto herself.
idiom
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take the law into (one's) own hands
  • To mete out justice as one sees fit without due recourse to law enforcement agencies or the courts.
idiom
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go to law
  • to take a problem or dispute to a law court for settlement
idiom
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lay down the law
  • to give explicit orders in an authoritative manner
  • to give a scolding (to)
idiom
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read law
  • to study to become a lawyer
idiom
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the Law
  • the Mosaic law, or the part of the Jewish Scriptures containing it; specif., the Pentateuch
  • a policeman or the police
idiom
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Idioms and Phrasal Verbs

a law unto (oneself)
go to law
read law
the Law

Origin of law

  • Middle English from Old English lagu from Old Norse lagu variant of lag that which is laid down legh- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle English lawe, laȝe, from Old English lagu (“law"), from Old Norse *lagu, an early plural form of lag, lÇ«g (“layer, stratum, a laying in order, measure, stroke, law", literally “something laid down or fixed"), from Proto-Germanic *lagÄ… (“that which is laid down"), from Proto-Indo-European *legh- (“to lie"). Cognate with Icelandic lög (“things laid down, law"), Swedish lag (“law"), Danish lov (“law"). Replaced Old English Ç£ and gesetnes. More at lay.

    From Wiktionary

  • From Old English hlāw (“burial mound"). Also spelled low.

    From Wiktionary

  • Compare la.

    From Wiktionary