disk

A thin, flat, circular plate or similar object.

"A coin is a disk of metal."

Something resembling a disk.

"Venus' disk cut off light from the Sun."

An intervertebral disc

A vinyl phonograph/gramophone record.

"Turn the disk over, after it has finished."

To harrow

A removable disk used for storing digital data, measuring between 2 and 8 inches diagonally and storing between 80 KB and 240 MB.