disc

noun

1. 1

   a flat circular plate

2. 2

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

3. 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. 4

   something with a round shape resembling a flat circular plate

   the moon's disk hung in a cloudless sky