Synonyms: belch, burp, bubble, eruct
Definition: expel gas from the stomach
Usage: In China it is polite to burp at the table
Synonyms: spew, spew out, eruct
Definition: eject or send out in large quantities, also metaphorical
Usage: the volcano spews out molten rocks every day; The editors of the paper spew out hostile articles about the Presidential candidate
Similar words: exhaust, expel, eject, discharge, release
Definition: eliminate (a substance)
Usage: combustion products are exhausted in the engine; the plant releases a gas