English to English

noun (n)

• (of volcanos) pouring out fumes or lava (or a deposit so formed)(noun.state)

  Synonym:
  eruption, extravasation
  

  source: wordnet30
• a reflex that expels gas noisily from the stomach through the mouth(noun.act)

  Synonym:
  belch, belching, burp, burping
  

  source: wordnet30
• The act of belching wind from the stomach; a belch.(noun)

  source: webster1913