turn in
informal (to go to bed)
- Sorry, I’m very tired, I have to turn in.
- Would you like something to eat before you turn in?
American English (to give something to someone who is in charge)
- The soldiers surrounded the rebels from all sides and ordered them to turn in their weapons.
- I have to turn in this report today.
American English (to give something back)
- Please turn in the books when you are finished with them.
- I want to turn in my gun and badge.
(to take or report someone to the police)
- She turned in a wanted man to police.
- He turned himself in to local police.