octagon
/ˈɒktəgən/noun
1- a plane figure with eight straight sides and eight angles八边形, 八角形。
1.1
- an object or building with a plan or cross section of this shape八角形物体; 八角形建筑。
派生词
octagonal
adjectiveoctagonally
adverb词源
late 16th cent.: via Latin from Greek octagōnos 'eight-angled'.