'beer belly' definitions:

Definition of 'beer belly'

From: GCIDE

beer belly \beer" bel`ly\ n. a protruding potbelly caused by excessive drinking of beer.
Syn: beer gut. [PJC]
In one of the less surprising revelations of the year, researchers at the University of North Carolina (UNC) and colleagues have confirmed that excessive consumption of beer can lead to the condition commonly known as beer belly. At the same time, however, they discovered that, beyond aesthetic concerns, the condition may point to health hazards of a more serious nature. In a comparison of beer drinkers and wine drinkers, the scientists found that beer tends to build a central paunch, or "potbelly", while wine drinkers tend to have narrower waists, even when the same amount of alcohol and calories is consumed by both. --The Scientist -- December 11, 1995.