pentagon

n 1 [C] geometric figure with five sides and angles 五角形; 五边形. 2 the Pentagon (a) [sing] the five-sided building near Washington that is the headquarters of the US Department of Defence and the US armed forces 五角大楼（美国国防部办公处）. (b) [Gp] the leaders of the US armed forces 美国三军首脑: a spokesman for the Pentagon 美国国防部发言人.

penniless, pennon, pennorth, Pennsylvania, penny, penny farthing, penny whistle, penny-pincher, pennyweight, pennyworth, penology, pension, pensionable, pensioner, pensive, pensively, pensiveness, pent up, pent-up, penta-, pentagonal, pentameter, Pentateuch, pentathlon, Pentecost, pentecostal, penthouse, penultimate, penumbra, penurious, penuriously, penuriousness, penury, peon, peony, people, pep, pep pill, pep talk, pepper,