Meaning of open-reel tape

o'pen-reel tape"

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