- bellyache⇄bellyache, noun, verb, -ached,-aching.
(Informal.) - bellyache⇄noun bellyacher.
- bellyache⇄noun 1. a pain in the abdomen; stomachache.
2. (Figurative.) a reason for complaining; grievance. - bellyache⇄v.i. (Figurative.) to complain or grumble, especially persistently and about relatively unimportant things.