A disc, also called a disk, was a form of technology that could store data. Some types of discs included CDs and DVDs.
History
On 7 March 2006, (TV: World War Three [+]Russell T Davies, Doctor Who series 1 (BBC One, 2005).) the Ninth Doctor gave Mickey Smith a computer virus on a CD disc. (TV: World War Three [+]Russell T Davies, Doctor Who series 1 (BBC One, 2005)., PROSE: Hoax This! [+]BBC webteam, Who is Doctor Who? (BBC, 2005)., Mickey's Blog [+]James Goss and Steve Tribe, The Doctor: His Lives and Times (BBC Books, 2013). Page 176.)