amphitheater
Definitions
An open-air venue used for past performances and public events, typically having a circular or oval plan with tiers of seats.
A semicircular or circular structure with rising tiers of seats for spectators, often used in ancient Rome for gladiatorial contests.
Examples
The ancient Roman amphitheater still stands as a testament to the architectural brilliance of the era.
We gathered at the outdoor amphitheater to watch the sunset concert under the stars.
The university built a modern amphitheater to host large lectures and guest speakers.