Longman Dictionary of Contemporary English homepage

Date: 1500-1600
Origin: peek + boo

peekaboo

 interjection, noun
     
Related topics: Other Games
peek‧a‧boo [uncountable]
DGO a game you play to amuse young children, in which you hide your face and then show it again, or the word you say when you play this game:
Peekaboo! I see you!
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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