Discus

DISCUS, noun [Latin]

1. A quoit; a piece of iron, copper or stone, to be thrown in play; used by the ancients.

2. In botany, the middle plain part of a radiated compound flower, generally consisting of small florets, with a hollow regular petal, as in the marigold and daisy.

3. The face or surface of the sun or moon. [See [[Disk]].]