boy Definition in the Cambridge English Dictionary
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Definition of “boy” - English Dictionary

Definition of "boy" - American English Dictionary

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boynoun [C]

 us   /bɔɪ/
a ​malechild or, more ​generally, a ​male of any ​age: Some boys were ​playingbasketball in the schoolyard. Boy sometimes ​meansson: We have two ​children – a boy and a ​girl.
Idioms
(Definition of boy from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "boy" - British English Dictionary

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boynoun [C]

uk   us   /bɔɪ/
A1 a ​malechild 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 (= ​theiryoungson) is very ​sick. All ​right, boys and ​girls, ​settle down!the boys B2 [plural] a ​group of ​malefriends: He used to like ​spendingFridaynights with the boys. (also our boys) an ​approving way of ​speaking about ​your country's ​soldiers: We must not ​forgetour boys ​servingfar from ​home.one of the boys a ​typicalmale: He ​playsbaseball, ​drinks a lot of ​beer and ​generallyacts like one of the boys.
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boyexclamation

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

Definition of "BOY" - Business English Dictionary

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BOYnoun [U]

uk   us   ACCOUNTING, FINANCE
abbreviation for beginning of year
(Definition of BOY from the Cambridge Business English Dictionary © Cambridge University Press)
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