Yes, disks is a Scrabble word!

Verb

1. Draw a harrow over (land)

Noun

1. Something with a round shape resembling a flat circular plate

2. A flat circular plate

3. Sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove

4. (computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored