/play"bak'/ , n.
1. the act of reproducing a sound or video recording, esp. in order to check a recording that is newly made.
2. (in a recording device) the apparatus used in producing playbacks.
3. the recording so played, esp. the first time it is heard or viewed after being recorded.
4. the response to a suggestion, act, product, venture, etc.; feedback: The playback on the speech has been very favorable.
[ 1925-30; n. use of v. phrase play back ]