disk

nouns

something with a round shape resembling a flat circular plate
"the moon's disk hung in a cloudless sky"
a flat circular plate
sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove
(computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored
is derived from

verbs

draw a harrow over (land)