1 N-COUNT 山雀 A tit is a small European bird that eats insects and seeds. There are several kinds of tit. 山雀

2See also:blue tit 

3 N-COUNT [usually plural] (女性的)乳头，奶子 A woman's tits are her breasts. (女性的)乳头，奶子 [informal, rude]

4 N-COUNT 笨蛋;傻瓜 If you call someone a tit, you are insulting them and saying that they are stupid. 笨蛋;傻瓜 [British, informal, rude, disapproval]