also *gwera-, Proto-Indo-European root meaning "food, devouring."

It forms all or part of: carnivorous; devour; gorge; gurges; hellebore; herbivore; herbivorous; insectivore; locavore; omnivorous; voracious; voracity; -vorous.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit girati "devours, swallows," garah "drink;" Avestan aspo-gar- "devouring horses," nere-gar- "devouring men;" Greek bobroskein "to eat, digest," brotos "edible," brosis "eating," bora "fodder;" Latin vorare "to swallow, devour;" Armenian e-ker "ate;" Lithuanian gerti "to drink," gìrtas "drunk;" Old Church Slavonic žiro "to swallow," grŭlo "gullet," po-žreti "to eat" (of animals), "to devour."

late 14c., from Late Latin gurgulationem (nominative gurgulatio), noun of action from past-participle stem of gurgitare "to engulf," from gurges "whirlpool, gorge" (see gurges).

"immoderate eating and drinking," 1520s, from Late Latin ingurgitationem (nominative ingurgitatio), noun of action from past participle stem of Latin ingurgitare "plunge into, gorge," from in- "in, into" (from PIE root *en "in") + gurgitare "to engulf," from gurges "whirlpool, gorge" (see gurges).

c. 1600, "act of pouring or rushing back," chiefly medical (of blood, digestive fluid, etc.), from Medieval Latin regurgitationem (nominative regurgitatio), noun of action from past-participle stem of regurgitare "to overflow," from re- "back" (see re-) + Late Latin gurgitare "engulf, flood" (found in Latin ingurgitare "to pour in"), from gurges "whirlpool, gorge, abyss" (see gurges).