Bunt Share definition Flag A slang blend term for a homosexual man's anus (the male version of a 'vagina' when describing a homosexual man's actual bum hole) – the combination of 'bum' and 'cunt'. 'Corr, I bet he's got a tight bunt!' Bunt by Straightgal1990 June 14, 2018 Get the Bunt mug.