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English definition of “boy”

boy

noun [C] uk   /bɔɪ/ us  
A1 a male child or, more generally, a male of any age: a teenage/adolescent boy As a young boy, my father used to walk three miles to school. You've been a very naughty boy! Their little boy (= their young son) is very sick. All right, boys and girls, quiet down! the boys B2 [plural] a group of male friends: He used to like spending Friday nights with the boys. (also our boys) an approving way of speaking about your country's soldiers: We must not forget our boys serving far from home. one of the boys a typical male: He plays baseball, drinks a lot of beer and generally acts like one of the boys.

boy

exclamation uk   /bɔɪ/ (also oh boy) mainly US informal us  
used to express excitement or to emphasize something: Boy, that was good!
(Definition of boy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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