Definition of Arena

Noun: arena u'ree-nu

A particular environment or walk of life
"his social arena is limited";
- sphere, domain, area, orbit, field
The central area of an ancient Roman amphitheatre where contests and spectacles were held; especially an area that was strewn with sand
A large structure for open-air sports or entertainments
- stadium, bowl, sports stadium
A playing field where sports events take place
- scene of action