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open-reel tape

American  
[oh-puhn-reel] / ˈoʊ pənˌril /

noun

  1. audiotape, usually 1/4 inch (6.4 millimeters) wide, wound on a single reel and requiring a separate take-up reel for playing or recording.


Etymology

Origin of open-reel tape

First recorded in 1965–70