belch

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To expel gas noisily from the stomach through the mouth; burp.
• intransitive verb To erupt or explode.
• intransitive verb To gush forth.
• intransitive verb To expel (gas) noisily from the stomach through the mouth; burp.
• intransitive verb To eject violently.

from The Century Dictionary.

• To eject wind noisily from the stomach through the mouth; eructate.
• To issue out, as with eructation: as, “belching flames,”
• To throw or eject from the stomach with violence; eructate.
• To eject violently from within; cast forth.
• To ejaculate; vent with vehemence: often with out: as, to belch out blasphemies; to belch out one's fury.
• noun The act of throwing out from the stomach or from within; eructation.
• noun A cant name for malt liquor, from its causing belching.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To eject wind from the stomach through the mouth; to eructate.
• intransitive verb To issue with spasmodic force or noise.
• transitive verb To eject or throw up from the stomach with violence; to eruct.
• transitive verb To eject violently from within; to cast forth; to emit; to give vent to; to vent.
• noun The act of belching; also, that which is belched; an eructation.
• noun obsolete Malt liquor; -- vulgarly so called as causing eructation.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To expel gas loudly or rudely from the stomach through the mouth.
• noun The sound one makes when belching.
• noun obsolete malt liquor

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb expel gas from the stomach
• noun a reflex that expels gas noisily from the stomach through the mouth
• verb become active and spew forth lava and rocks