twatPronunciation: /twɒt, twat/Definition of twat noun 1 vulgar slang a woman’s genitals. a person regarded as stupid or obnoxious. verb [with object] British informal hit or punch (someone): if my best mate said that I’d twat him outOrigin: mid 17th century: of unknown origintwat in other Oxford dictionaries Definition of twat in the US English dictionary