bellyache /ˈbɛliˌeɪk/noun 1verb 1forms 3 noun1 •Any pain in the belly, stomach, or abdomen.Eating too much candy can give you a bellyache. verb1 •(informal, figurative) To unnecessarily complain or whine, often about simple matters.Quit bellyaching about the problem and help us fix it. formsbellyached · bellyaching · bellyaches