something that a company gives free, usually with something else that is for sale (公司为推销产品搭送的)随赠品 There's lots of amazing giveaways, from cinema tickets to film posters. 有很多惊人的赠品,从电影票到电影海报。
something that makes you guess the real truth about something/somebody 使真相暴露的事物 She pretended she wasn't excited but the expression on her face was a dead (= obvious) giveaway. 她假装不为所动,可脸上的表情却将她的心绪暴露无遗。