shut one's trap - Wiktionary, the free dictionary (original) (raw)
From Wiktionary, the free dictionary
From the slang use of trap in reference to a person's mouth.
shut one's trap (third-person singular simple present shuts one's trap, present participle shutting one's trap, simple past and past participle **shut one's trap)
- (idiomatic) To stop talking; to be quiet.
Why don't you just shut your trap? I'm tired of listening to you.
- See also Thesaurus:stop talking