noun
disk
dihsk
noun
1
A flat, round, thin object.
"The Frisbee is basically a plastic disk you throw through the air."
2
A round, flat storage device used in computers, such as a hard disk or floppy disk.
"Back up your files to an external disk before the update."
How to Use Disk
Learner’s notesIn plain EnglishSomething flat and circular, or a computer storage device shaped that way.
UK vs US
American English generally prefers "disk" for computing (hard disk, disk drive) while British English often uses "disc" for physical media like CDs; usage overlaps a lot in practice.
Easily confused with
Common pairings
hard disk
disk drive
disk space
Word Forms
disked past tense, disks singular
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Fill the Gap
Can you complete this real example?
The Frisbee is basically a plastic _____ you throw through the air.
Etymology
From Ancient Greek diskos, "a round plate for throwing" — the same root that also gives us "disc," "discus," "dish," and "desk."