a function of an electronic recording device, as a tape recorder or cassette deck, that allows the tape to be advanced rapidly.
the button or switch that activates this function.
fast-for•wardPronunciation: (fast'fôr'wurd, fäst'-), [key]
(on a recording device or projector) to advance a tape or film rapidly, using the fast forward.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.