(especially in Greek and Roman architecture) a round building, typically unroofed, with a central space for the presentation of dramatic or sporting events surrounded by tiers of seats for spectators (尤指古希腊和罗马建筑)圆形露天剧场 ■a semicircular seating gallery in a theatre (剧院)半圆形楼座
语源
late Middle English : via Latin from Greek amphitheatron, from amphi 'on both sides' + theatron (see theatre)