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English definition of “peek”

peek

verb [I] uk   /piːk/ us  
C2 to look, especially for a short time or while trying to avoid being seen: Close your eyes. Don't peek. I've got a surprise for you. I peeked out the window to see who was there. The children peeked over the wall to see where the ball had gone. The film peeks behind the scenes of a multinational corporation. peek out, through, etc. to stick out slightly and be partly seen: I could just see her petticoat peeking out from under her skirt.

peek

noun uk   /piːk/ informal us  
have/take a peek C1 to look at something for a short time: If I'm passing by I might take a peek at the new premises.
(Definition of peek from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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