turn in - definition and synonyms

phrasal verb
present tense
I/you/we/theyturn in
he/she/itturns in
present participleturning in
past tenseturned in
past participleturned in
  1. 1
    [transitive] to tell the police about someone, or to take them to the police, because they have committed a crime

    His own brother turned him in.

    turn yourself in:

    She turned herself in to local police.

  2. 2
    [transitive] turn in something to produce a particular amount or degree of something
  3. 3
    [intransitive/transitive] to point or be directed inwards, or to make something do this

    Turn your toes in, like this.

     Synonyms and related words
  4. 4
    mainly American to give something to the person who has officially asked for it or who is in charge
    turn in something to someone:

    Mitro turned in his resignation to the President.

  5. 5
    [intransitive] informal old-fashioned to go to bed at night
  6. 6
    [transitive] mainly American to return something to the person it belongs to, especially something that was lost or was lent to you
See also main entry: turn