discus

(dĭsˈkəs)

1. Sports
   a. A disk, typically wooden or plastic with a metal rim, that is thrown for distance in athletic competitions.
   b. A track-and-field event in which a discus is thrown.
2. A small, brilliantly colored South American freshwater fish (Symphysodon discus) that has a disk-shaped body and is popular in home aquariums.
3. Something resembling a flat circular plate; a disk.
4. Botany See disk.