definition of
[turn in]

[1] #1 turn in v. make an entrance by turning from a road; "Turn in after you see the gate". wn

[2] #2 turn in v. 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". wn

[3] #3 turn in v. carry out (performances); "They turned in a splendid effort"; "They turned in top jobs for the second straight game". wn

[4] #4 turn in v. prepare for sleep; "I usually turn in at midnight"; "He goes to bed at the crack of dawn". wn