Dictionary
o'pen-reel tape"
Pronunciation: (ō'pun-rēl"), [key]audiotape, usually ¼ in. (64 mm) wide, wound on a single reel and requiring a separate take-up reel for playing or recording. Also called
reel-to-reel tape. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.