1N-COUNT 蠢材;笨蛋;鸟人 If someone calls another person a twat, they are insulting them and showing that they do not like or respect them. 蠢材;笨蛋;鸟人 [informal, offensive, disapproval]
2N-COUNT Some people use the word twat to refer to a woman's vagina. [informal, very rude]