Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

728. Arena — N. arena, field, platform; scene of action, theater;

walk, course; hustings; stare, boards &c (playhouse) 599; amphitheater; Coliseum, Colosseum; Flavian amphitheater, hippodrome, circus, race course, corso [Sp.], turf, cockpit, bear garden, playground, gymnasium, palestra, ring, lists; tiltyard†, tilting ground; Campus Martins, Champ de Allars†; campus [U.S.]. boxing ring, canvas. theater of war, seat of war; battle-field, battle-ground; field of battle, field of slaughter; Aceldama†, camp; the enemy's camp; trusting place &c (place of meeting) 74. SECTION V. RESULTS OF VOLUNTARY ACTION