Meaning of DISK in English

DISK

UK also disc, diskette [noun] [C] - a flat circular device, usually inside a square container, which has a magnetic covering and is used for storing computer informationSee also disc. #See also floppy disk at floppy;USAGE: In American English the spelling 'disk' is also used for the part of your back and when referring to the sun. See disc.A disk drive is a piece of computer equipment that allows information to be stored on and read from a disk.A disk operating system ( DOS) is a program which allows the use of information stored on disk.

Cambridge English vocab.      Кембриджский английский словарь.