brah Syllabification: (brah)Pronunciation: /brä/ (also bra)Definition of brah noun informal, chiefly US & South African a male friend or associate:his brahs are giving him major props used as a familiar form of address for a man:hey, brah! (Bra) used as an informal title before a man’s name:Bra RufusOrigin: late 19th century (originally West Indian): perhaps originally representing a colloquial pronunciation of brother; compare bro, brerbrah in other Oxford dictionaries Definition of brah in the British & World English dictionary