A quoit; a circular plate of some heavy material intended to be pitched or hurled as a trial of strength and skill.
- Sports A disk, typically wooden or plastic with a metal rim, that is thrown for distance in athletic competitions.
- Sports A track-and-field event in which a discus is thrown.
- A small, brilliantly colored South American freshwater fish (Symphysodon discus) that has a disk-shaped body and is popular in home aquariums.
- Something resembling a flat circular plate; a disk.
- Botany See disk.