Source : WordNet®

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}, {get 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}]
     4: go to bed in order to sleep; "I usually turn in at
        midnight"; "He turns out at the crack of dawn" [syn: {go
        to bed}, {bed}, {crawl in}, {kip down}, {hit the hay}, {hit
        the sack}, {sack out}, {go to sleep}, {retire}] [ant: {get
        up}, {get up}]