cassettes
A cassette is an audiotape, for recording or listening to sound. Before CDs were invented in the 1980s, many people bought their favorite music albums on cassettes.
You can use the word cassette to mean an audio or a videotape, though it's more commonly used for something you listen to. To use a cassette, you need a tape player or recorder. Cassette means "little box" in French, and this describes the way it looks, like a small plastic box. The modern meaning came about in 1960.
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