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English definition of “bro”

bro

noun [C]     /brəʊ/ US  /broʊ/ (plural bros)
informal a brotherNames people call their close relatives mainly US informal used when talking to a male friend: [as form of address] Hey, bro, what's up?Friendly and unfriendly terms of address
(Definition of bro noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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