Definition of barf
- Acute mountain sickness is typified by a headache that feels as if Thor himself is hammering your brain and by a strong desire to barf.
- —Douglas Gantenbein
- In a pure Madonna moment, she sticks two fingers down her throat and pretends to barf.
- —Peter Travers
barfnoun, US, informal
- "Lemme take you to the bar," he yells to a guest who bellies up and immediately skids in a puddle of barf.
- —Guy Trebay