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1. [for something] to fold or point inward. Do my toes turn in too much? The legs of the table turned in at the bottom, giving a quaint appearance to the piece of furniture.
2. [for someone] to go to bed. It's time to turn in. Good night. I want to turn in early tonight.
turn in (some place)and turn into (some place)
to walk or steer one's vehicle into a place. Turn into the next service station for some gas. I'll turn in for gas now. She walked down the street and turned into the drugstore.
turn someone or something in (to someone or something)
to submit or refer someone or something to someone or a group, especially in some official capacity. The good citizen turned his neighbor in for watering his lawn during the wrong hours. I turned in the report to the treasurer.
to go to your bed in order to sleep I'm getting sleepy - I think I'll turn in.
turn in somethingalso turn something in
to give or return something to someone in authority We have another week to turn in the report. He found a stack of twenty-dollar bills and he doesn't want to turn it in.
turn in somebodyalso turn somebody in
to take or report someone to the police or other authority I would feel very nervous about turning in my neighbors to the police. He learned that the police were looking for him and turned himself in.
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]
1. To deliver or submit some assignment or work: I turned my application in before the deadline. That actor turns in a consistent performance every show.
2. To inform on or deliver someone or something to an authority: I turned in the wallet that I found to the police. The criminals turned themselves in.
3. To go to bed: I turned in early last night.
turn inand roll in
in. to go to bed. Well, it’s about time to turn in.