noun
a rigid magnetic disk mounted permanently in a drive unit
• Syn: ↑hard disk, ↑fixed disk
• Hypernyms: ↑magnetic disk, ↑magnetic disc, ↑disk, ↑disc
• Hyponyms: ↑removable disk
• Part Holonyms: ↑disk drive, ↑disc drive, ↑hard drive, ↑Winchester drive
Useful english dictionary. 2012.