From Longman Dictionary of Contemporary Englishbrobro /brəʊ $ broʊ/ noun (plural bros) [countable] spoken 1 FAMILYTALK TO somebodyyour brother2 American EnglishTALK TO somebodyFRIENDLY a way of greeting a friend
Examples from the Corpus
bro• The doctor calls it a panic attack, I call it a trip down memory lane for big bro.• But these sibling difficulties are minor beside the difficulties opened up for George W by his little bro.• By another stroke - nay, complete coronary - of fortune, Hugo's bro Jebb was a bassist.Origin bro (1600-1700) brother 