Belching

v. emit, discharge (i.e. smoke); burp

Burping, also known as belching, ructus, or eructation is the release of gas from the digestive tract (mainly esophagus and stomach) through the mouth. It is often accompanied with a typical sound and sometimes an odor.
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Noun
1. the forceful expulsion of something from inside; "the belching of smoke from factory chimneys"
(hypernym) expulsion, projection, ejection, forcing out
2. a reflex that expels wind noisily from the stomach through the mouth
(synonym) belch, burp, burping, eructation
(hypernym) reflex, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction

Noun
1. a reflex that expels wind noisily from the stomach through the mouth
(synonym) belching, burp, burping, eructation
(hypernym) reflex, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction
(derivation) burp, bubble, eruct
Verb
1. expel gas from the stomach; "In China it is polite to burp at the table"
(synonym) burp, bubble, eruct
(hypernym) emit, breathe, pass off
(derivation) belching, burp, burping, eructation
2. become active and spew forth lava and rocks; "Vesuvius erupts once in a while"
(synonym) erupt, extravasate
(hypernym) explode, burst

(p. pr. & vb. n.)
of Belch
  

A normal process to relieve distention from the air that accumulates in the stomach. The upper abdominal discomfort associated with excessive swallowed air may extend into the lower chest, producing symptoms suggesting heart or lung disease.