arena

noun

1. a particular environment or walk of life

   noun.state

   Synonyms area domain field orbit sphere

   Source: WordNet 3.0

2. the central area of an ancient Roman amphitheater where contests and spectacles were held; especially an area that was strewn with sand

   noun.location

   Source: WordNet 3.0

3. a large structure for open-air sports or entertainments

   noun.artifact

   Synonyms bowl sports stadium stadium

   Source: WordNet 3.0

4. a playing field where sports events take place

   noun.artifact

   Synonyms scene of action

   Source: WordNet 3.0

5. 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.

   noun

   Source: webster1913