exclusionary rule
(US, legal) A doctrine which requires that evidence obtained as the result of an illegal act on the part of law enforcement personnel (such as a warrantless search, or continued questioning a witness who has invoked the right of counsel) must therefore be excluded from being admitted as evidence in a trial.
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(US, legal) A doctrine which requires that evidence obtained as the result of an illegal act on the part of law enforcement personnel (such as a warrantless search, or continued questioning a witness who has invoked the right of counsel) must therefore be excluded from being admitted as evidence in a trial. This rule does not apply in civil proceedings, although statutes sometime specifically provide for exclusion of such evidence.
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(US, legal, idiomatic) that has been obtained as the result of an illegal act on the part of law enforcement personnel (such as an unlawful warrantless search, or continued questioning of a witness who has invoked the right of counsel), and which is therefore excluded from being admitted as evidence in a trial.
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(US, law) An exception to the Fourth Amendment's warrant requirement that allows an officer to seize evidence and contraband that are found in plain view during a lawful observation.
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(US, law) A judicial doctrine to strike down the claim of a party in the civil forfeiture action who had absconded on the criminal case.
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Forbidden by established rules.
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(US, legal) A rule of evidence regarding the admissibility of expert witnesses' testimony during federal legal proceedings, and based (among other factors) on the use of the scientific method.