From Longman Dictionary of Contemporary Englishbeer bellyˈbeer ˌbelly (also beer gut) noun [countable] HBHFATan unattractive fat stomach caused by drinking too much beer
Examples from the Corpus
beer belly• He had a beer belly that hung over the top of his filthy jeans.• The kite refers to a beer belly.• The contractor was a tall man with a beer belly and a cowboy hat.• She was grizzled old woman with a beer belly and voice to match, and she knew something about justice.• Costner, with his easy grin, incipient beer belly, thinning hair and bright devilish eyes, plays broken-down convincingly. 