play·backn /ˈpleɪbæk/ noun [countableC usually singular, uncountableU]
n1[C usually singular一般用单数, U] the playback of a tape that you have recorded is when you play it on a machine in order to watch or listen to it〔录音带、录像带等的〕重放,回放
the playback button on an answering machine
电话答录机上的回放键
n2.[C] BrE an action in a sports game that is shown again, so that people can see exactly what happened【英】〔体育比赛中动作的〕重放,重播SYN replay
3nTCRthe act of playing a film, a piece of music, or a message has been recorded on a machine and watching or listening to it again