turn in

verb5

1. •
   To submit something; to give.

   • He turned in his paperwork to the main office.
   • The actors turned in a formulaic performance.
2. •
   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.
3. •
   To go to bed; to retire to bed.

   • I'm tired, so I think I'll turn in early tonight.
4. •
   To convert a goal using a turning motion of the body.
5. •
   To reverse the ends of threads and insert them back into the piece being woven so they do not protrude and eventually unravel.