amphitheatre
n.n. a large, open-air building with a circular or oval shape where people sit to watch performances. It is usually built into a hillside so that the audience is protected from the wind.
n. a large, open-air theatre with a circular or oval shape, typically built into a hillside to provide natural acoustics and protection from the elements. Often used to describe the physical structure of ancient Roman or Greek performance spaces.
The ancient amphitheatre is still used for summer concerts.
Archaeologists discovered a massive amphitheatre hidden beneath the city's modern streets, suggesting the area was once a major cultural center.
The design of the Roman amphitheatre allowed for excellent visibility and sound distribution, enabling thousands of spectators to enjoy gladiatorial contests without the need for artificial amplification.
From Latin amphitheatrum, from Ancient Greek ἀμφιθέατρον (amphithéatron) from ἀμφί (amphí, “on both sides”) + θέᾱτρον (théātron, “theatre”).