How many letters does the top answer for “expel gas from the stomach” have?

The most common answer is belch (5 letters).

Crossword clue: expel gas from the stomach

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

belch 5 letters wn-def

a reflex that expels gas noisily from the stomach through the mouth

burp 4 letters wn-def

a reflex that expels gas noisily from the stomach through the mouth

eruct 5 letters wn-def

expel gas from the stomach