Definition of "barf" in English

noun

1. (US, colloquial) Vomit.

verb

1. (US, colloquial) To vomit.

2. (computing, slang, intransitive, by extension) Of a system: to fail.

   • The program barfed as a result of the invalid input.

interjection

1. (colloquial) An expression of disgust.

   • 2011, "This is My Jam", season 2, episode 13 of Regular Show Mordecai: You can't touch music. But music can touch you. Rigby: Oh, barf.