To rewind is to reel or wind a tape or film backwards, or to otherwise reverse back on something.(verb)
When a VCR tape is playing and you want to go back five minutes and watch the prior scene again so you wind the tape back, this is an example of when you rewind.
See rewind in Webster's New World College Dictionary
See rewind in American Heritage Dictionary 4
transitive verb re·wound (-woundˈ), re·wind·ing, re·winds
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