a legal rule that evidence obtained illegally, as from a search without a warrant, may not be introduced at trial
The rule, based upon the Fourth Amendment to the US Constitution, that prevents the use of illegally seized evidence against a defendant in a criminal trial.
(plural exclusionary rules)
- (US, law) 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.
exclusionary rule - Legal Definition
Of litigation, a body of rules that provide that evidence may not be introduced if it was obtained in violation of a party’s constitutional rights.