An enclosed area, often outdoor, for the presentation of sporting events (sports arena) or other spectacular events; earthen area, often oval, specifically for rodeos (North America) or circular area for bullfights (especially Hispanic America).
User Defined Definitions
"a particular environment or walk of life"
"the central area of an ancient Roman amphitheater where contests and spectacles were held; especially an area that was strewn with sand"
"a large structure for open-air sports or entertainments"