Arena
From BiblePortal Wikipedia
Webster's Dictionary [1]
(1): (n.) 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): (n.) Any place of public contest or exertion; any sphere of action; as, the arenaof debate; the arena of life.
(3): (n.) "Sand" or "gravel" in the kidneys.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]
(Lat.), the floor of an amphitheatre, a wooden floor covered with sand for the athletes to wrestle upon; sometimes applied to the amphitheatre itself; often confounded with the area or open space,- and in that sense applied also to the body of a church.
