open-reel tape

[ oh-puh n-reel ]
/ ˈoʊ pənˌril /

noun

audiotape, usually 1/4 inch (64 mm) wide, wound on a single reel and requiring a separate take-up reel for playing or recording.

Origin of open-reel tape

First recorded in 1965–70
Also called reel-to-reel tape.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019