Mapp hearing

Mapp hearing. Criminal procedure. A hearing held to determine whether evidence implicating the accused was obtained as the result of an illegal search and seizure, and should therefore be suppressed. Mapp v. Ohio, 367 U.S. 643, 81 S.Ct. 1684 (1961). [Cases: Criminal Law 394. 6. C.J.S. Criminal Law § 794.]