Amphitheatre
(n.) An oval or circular building with rising tiers of seats about an open space called the arena.
(n.) Anything resembling an amphitheater in form; as, a level surrounded by rising slopes or hills, or a rising gallery in a theater.
Similar Words:
Amphi- Amphiarthrodial Amphiarthrosis Amphiaster Amphibia Amphibial Amphibian Amphibiological Amphibiology Amphibiotica