verb, adverb, measure word · to take someone else's property without permission

他偷了我的钱包。

verb, adverb · doing something in a secret or surreptitious manner

他偷着看了一眼我的手机。

punctuation, verb · a person who steals

那个小偷在公交车上偷钱包时，被勇敢的乘客当场抓获。