8 letters · 13 points in Scrabble
noun a small plastic magnetic disk enclosed in a stiff envelope with a radial slit; used to store data or programs for a microcomputer
originEtymology tree English disk English -ette ▲ English cassetteinflu. English diskette From disk + -ette, by analogy with cassette.
Etymology from Wiktionary, CC BY-SA 3.0