WordReference Random House Unabridged Dictionary of American English © 2017
bro  (brō, bru),USA pronunciation n., pl.  bros. [Slang.]
  1. brother.
  2. Slang Termsfriend;
reduced form of brother]

bro., pl.  bros. 
  1. brother.
Also,  Bro. 

Collins Concise English Dictionary © HarperCollins Publishers::

bro /bruː/ n
  1. South African informal a friend, often used in direct address
Etymology: 20th Century: from Afrikaans broer brother

bro. /brəʊ/ abbreviation for
  1. brother

'bro' also found in these entries:

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