Reel definition, a cylinder, frame, or other device that turns on an axis and is used to wind up or pay out something. See more. Reel-to-reel · Unreel · Reel man · Reel off. reel definition, meaning, what is reel: a round, wheel-shaped object on which sewing thread, fishing wire, film, etc. can be. Learn more. Definition of reel in the ipromi.de dictionary. Information and translations of reel in the most comprehensive dictionary definitions resource on the web.