amphitheatre

Universal Words (BrE) (AmE amphitheater) noun 1 a circular building without a roof and with rows of seats that rise in steps around an open space. Amphitheatres were used especially in ancient Greece and Rome for public entertainments. 2 a room, hall or theatre with rows of seats that rise in steps 3 (technical) an open space that is surrounded by high land in a circular slope: The path emerges from the gorge into an open amphitheatre with slopes all around.