- amphitheater, amphitheatre - a sloping gallery with seats for spectators (as in an operating room or theater)
--1 is a kind of gallery
--1 has parts: tiered seats - amphitheater, amphitheatre, coliseum - an oval large stadium with tiers of seats; an arena in which contests and spectacles are held
--2 is a kind of stadium, bowl, arena, sports stadium
--2 has parts: vomitory
--2 has particulars: Colosseum