English Motion to Suppress MO-shun tuh suh-PRES A legal motion filed in court asking the judge to exclude evidence from trial on the grounds that it was obtained illegally. The defendant filed a motion to suppress evidence seized by the police during a warrantless search of his car. Weeks v. United States (1914) - The Supreme Court established the exclusionary rule, which prohibits the use of evidence obtained in violation of the Fourth Amendment. ← Back to BrowseNext Term →