(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
(尤指希腊和罗马建筑)圆形露天剧场;圆形露天竞技场。
a semicircular seating gallery in a theatre
(剧院)半圆形楼座。
"late Middle English: via Latin from Greek