turn in

turn in idiom
  1. Hand in, give over, as in I turned in my exam and left the room. [c. 1300]
  2. Surrender or inform on, especially to the police, as in The shoplifter turned herself in. [1920s]
  3. Produce, as in He turned in a consistent performance every day. [Mid-1900s]
  4. Go to bed, as in I turned in early last night. [Colloquial; late 1600s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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