[syn: go to bed, turn in, bed, crawl in, kip down, hit the hay, hit the sack, sack out, go to sleep, retire]
WordNet (r) 3.0 (2006):
turn in
v 1: make an entrance by turning from a road; "Turn in after you
see the gate"
2: to surrender someone or something to another; "the guard
delivered the criminal to the police"; "render up the
prisoners"; "render the town to the enemy"; "fork over the
money" [syn: hand over, fork over, fork out, fork up,
turn in, deliver, render]
3: carry out (performances); "They turned in a splendid effort";
"They turned in top jobs for the second straight game" [syn:
put on, turn in]
4: prepare for sleep; "I usually turn in at midnight"; "He goes
to bed at the crack of dawn" [syn: go to bed, turn in,
bed, crawl in, kip down, hit the hay, hit the sack,
sack out, go to sleep, retire] [ant: arise, get up,
rise, turn out, uprise]