A*re"na (#), n.; pl. E. Arenas (#); L. Arenae (#). [L. arena, harena, sand, a sandy place.]
1. Rom. Antiq.
The area in the central part of an amphitheater, in which the gladiators fought and other shows were exhibited; -- so called because it was covered with sand.
2.
Any place of public contest or exertion; any sphere of action; as, the arena of debate; the arena of life.
3. Med.
"Sand" or "gravel" in the kidneys.
© Webster 1913.