amphitheater
/ˌæmfɪˈthiːətər/Definitions
1. noun
A circular or oval outdoor theater in ancient Greece and Rome, typically with tiered seating.
“The ancient amphitheater was still standing despite the passing of centuries.”
2. noun
A building or structure with a similar design, especially for concerts or performances.
“The new amphitheater in the city will host a famous musician’s concert.”