disc or disk 
/ˈdɪsk/ noun
plural discs or disks /ˈdɪsk/ noun [count] 1 : a flat, thin, round object
▪ a plastic disc ▪ a cracker topped with a thin disk of sausage 2 disk : a flat, thin, round object that is used to store large amounts of information (such as computer data)
▪ Insert the disk into the CD drive. ▪ There isn't much disk space [=room for storage on a computer disk] left. — see also disk drive, floppy disk, hard disk, optical disk 3 disc a : cd
▪ I don't have that recording on vinyl, but I have it on disc.
b old-fashioned : 1record 4 — see also disc jockey 4 medical : one of the flat, rubbery pieces that separate the bones of the backbone —called also intervertebral disc; — see also slipped disc
▪ a plastic disc ▪ a cracker topped with a thin disk of sausage
▪ Insert the disk into the CD drive. ▪ There isn't much disk space [=room for storage on a computer disk] left. — see also disk drive, floppy disk, hard disk, optical disk
▪ I don't have that recording on vinyl, but I have it on disc.
b old-fashioned : 1record 4 — see also disc jockey
