Definition of peekaboo noun from the Oxford Advanced American Dictionary

 

peekaboo

 noun
noun
NAmE//ˈpikəˌbu//
 
[uncountable]
 
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a simple game played to amuse young children, in which you keep hiding your face and then showing it again, saying “Peekaboo!”
See the Oxford Advanced Learner's Dictionary entry: peekaboo