BARF Meaning of BARF in English barf /bɑːf $ bɑːrf/ BrE AmE verb [intransitive] American English informal [ Date: 1900-2000 ; Origin: Probably from the sound ] to ↑ vomit—barf noun [uncountable] Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012