Pentagon
['pentəɡ(ə)n] or ['pɛntəɡɑn]
解释:
(noun.) a government building with five sides that serves as the headquarters of the United States Department of Defense.
(noun.) the United States military establishment.
(noun.) a five-sided polygon.
整理:辛克莱--From WordNet
解释:
(n.) A plane figure having five angles, and, consequently, five sides; any figure having five angles.
手打:拉蒙纳
解释:
n. (geom.) a plane figure having five angles and five sides: a fort with five bastions.—adj. Pentag′onal.—adv. Pentag′onally.
埃塞尔手打