Borborygmi

n. rumbling in the stomach caused by intestinal gas

Borborygmus (plural borborygmi) (from Greek βορβορυγμός) is the rumbling sound produced by the movement of gas through the intestines of animals or humans. The word borborygmus is an onomatopoeia for this rumbling.The "rumble" or "growl" sometimes heard from the stomach is a normal part of digestion. It originates in the stomach or upper part of the small intestine as muscles contract to move food and digestive juices down the gastrointestinal tract and functions as a sort of intestinal "housecleaning".Although this muscle contraction happens whether or not food is present, rumbles are more common after the animal has gone several hours without eating. This may be why a "growling" stomach is often associated with hunger.
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Borborygmus /bor·bo·ryg·mus/ pl. borboryg´mi [L.] a rumbling noise caused by propulsion of gas through the intestines. bor·bo·ryg·mus n. pl. [more]Borborygmi - Community and Resources

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