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English definition of “boo-boo”

boo-boo

noun [C] uk   /ˈbuː.buː/ (plural boo-boos) us  
informal a mistake: Oops, I think I made a boo-boo there - I hope she's not too upset. US child's word a slight injury: Tess fell down and got a boo-boo on her hand.
(Definition of boo-boo from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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