twatn.

twattwat: see twittwat (n.)female pudendum, 1650s, of unknown origin. A general term of abuse since 1920s. The T-word occupies a special niche in literary history, however, thanks to a horrible mistake by Robert Browning, who included it in \\'Pippa Passes\\' (1841) without knowing its true meaning. \\'The owls and bats,/Cowls and twats,/Monks and nuns,/In a cloister\\'s moods.\\' Poor Robert! He had been misled into thinking the word meant \\'hat\\' by its appearance in \\'Vanity of Vanities,\\' a poem of 1660, containing the treacherous lines: \\'They\\'d talk\\'t of his having a Cardinalls Hat,/They\\'d send him as soon an Old Nuns Twat.\\' (There is a lesson here about not using words unless one is very sure of their meaning.) [Hugh Rawson, "Wicked Words," 1989]