Pronunciation: (dis'kus),[key] —n., —pl.dis•cus•es, dis•ciPronunciation: (dis'ī).[key] 1. a circular disk more than 7 in. (18 cm) in diameter and 2.2 lb. (1 kg) in weight, usually wooden with a metal rim and thicker in the center than at the edge, for throwing for distance in athletic competition.
2. the sport of throwing this disk for distance.