disc
n. countablen. a flat, thin, round object. You use this word for things like computer storage, music records, or the round parts between the bones in your back.
n. a thin, flat, circular object or surface. In anatomical contexts, it refers to the fibrocartilaginous structures between vertebrae; in computing, it refers to magnetic or optical storage media.
The doctor says I have a slipped disc in my back.
The technician inserted the recovery disc into the drive to repair the corrupted operating system.
The interstellar cloud eventually collapsed into a rotating disc of gas and dust, providing the raw material for the formation of a new planetary system.
From French disque, from Latin discus, from Ancient Greek δίσκος (dískos, “disk, quoit, platter”). Doublet of dais, desk, discus, dish, disk, and diskos.
Commonly spelled 'disk' in American English and computing contexts, while 'disc' is preferred in British English and for optical media like CDs.