单词	octagon
释义	octagonoctagon /ˈɑktəˌgɑn/ noun [countable] Etymology ETYMOLOGYoctagon Origin: 1500-1600 Latin octagonum, from Greek, from okta- eight + -gonon -gon math, geometry a flat shape with eight sides—octagonal /ɑkˈtægənl/ adjective:  an octagonal room
随便看	dryness dry rot dry run dry-shod dry-wall drywall DST DTP D.T.'s dual duality dub dubiety dubious dubiously dubiousness Dublin Du Bois, W.E.B. ducal ducat Duchamp, Marcel duchess duchy duck duck-billed platypus

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