| verb | eject or send out in large quantities, also metaphorical “the volcano spews out molten rocks every day” |
| verb | expel gas from the stomach “In China it is polite to burp at the table” |
| eructation | noun | (of volcanos) pouring out fumes or lava (or a deposit so formed) |
| burp | noun | a reflex that expels gas noisily from the stomach through the mouth |
| bubble | noun | a hollow globule of gas (e.g., air or carbon dioxide) |
| belch | noun | a reflex that expels gas noisily from the stomach through the mouth |