Definition of Belch

Noun: belch belch

A reflex that expels gas noisily from the stomach through the mouth
- belching, burp, burping, eructation

Verb: belch belch

Expel gas from the stomach
"In China it is polite to belch at the table";
- burp, bubble, eruct
Become active and spew forth lava and rocks
"Vesuvius belches once in a while";
- erupt, extravasate