1 definition by mike french

the wet stain towards the back of a gentleman's pants from the sweat originating in the taint area (the area between the testicles and the anus). Similar to swass or swamp ass, but differentiated by a lower stain. This is particularly common in men with groomed testes
Throw a towel down! I don't want your swaint all over my car.
by mike french June 24, 2011
Get the swaint mug.