DescriptionDemo Disk - demo disk (de-()m (,)disk : From "demonstration disc" noun 1. A compact disc containing a demonstration, or sample, of prospective software 2. A trial version of computer programs contained on a compact disc 3. A video series created and curated by the Funhaus team from Rooster Teeth, wherein a cast members attempt to play a variety of cruddy old demo discs, with varying results. First known use of DEMO: 1793 (org Latin dmonstrtus, past participle of dmonstrre to show, point out, equivalent to d- de- + monstrre to show, verbal derivative of monstrum sign, portent) First known use of DISC: 1664 (org. Latin 'discus') First known use of Demo Disk: 2015