1 [C,U] (an act of) cheating sb in order to get money, etc illegally 讹骗: The accountant was sent to prison for fraud. 会计师因诈骗而锒铛入狱。Massive amounts of money are lost every year in credit card frauds. 涉及信用卡的欺诈罪行，每年都造成巨额金钱损失。

2 [C] a person who tricks sb by pretending to be sb else （假冒别人的）骗子