- (transitive, idiomatic) to submit something; to give
- He turned in his paperwork to the main office.
- The actors turned in a formulaic performance.
- (transitive, idiomatic) to relinquish; give up; to tell on someone to the authorities (especially to turn someone in)
- The thief finally turned himself in at the police station.
- My nosy next-door neighbor turned me in for building my garage without a permit.
- (intransitive, idiomatic) to go to bed; retire to bed
- I'm tired, so I think I'll turn in early tonight.
- 1851 November 13, Herman Melville, chapter 3, in Moby-Dick; or, The Whale, 1st American edition, New York, N.Y.: Harper & Brothers; London: Richard Bentley, OCLC 57395299 ↗:
- “Landlord,” said I, “tell him to stash his tomahawk there, or pipe, or whatever you call it; tell him to stop smoking, in short, and I will turn in with him.
- (soccer) To convert a goal using a turning motion of the body.
- (submit, give) hand in; See also Thesaurus:give
- (relinquish) capitulate, submit; See also Thesaurus:surrender
- (tell on someone to the authorities) inform, grass up, snitch; See also Thesaurus:rat out
- (retire to bed) hit the sack, retire; See also Thesaurus:go to bed
- (convert a goal)