disc S3 also disk especially American English [countable]
a round flat shape or object:
three keys attached to a metal disc
a compact disc
a record that you play on a record player
4TD British EnglishTD
a computer disk
The report form is available on disc from Personnel.
a flat piece of cartilage between the bones of your back:
He retired early because of a slipped disc (=one that has moved out of its correct place).