Definition of turn in phrasal verb from the Oxford Advanced Learner's Dictionary


turn in

 phrasal verb
phrasal verb
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Phrasal Verbs
  1. 1to face or curve towards the centre Her feet turn in.
  2. 2(old-fashioned) to go to bed It’s late—I think I’ll turn in.
(informal) to take somebody to the police or somebody in authority because they have committed a crime She threatened to turn him in to the police. He decided to turn himself in.
  1. 1to give back something that you no longer need You must turn in your pass when you leave the building.
  2. 2(especially North American English) to give something to somebody in authority They turned in a petition with 80 000 signatures. I haven't even turned in Monday's work yet.
  3. 3to achieve a score, performance, profit, etc. The champion turned in a superb performance to retain her title.
See the Oxford Advanced American Dictionary entry: turn in