adj.八边形的;八角;
例句:
Octagonal tower for the straight-hollow, with brick foot jump.
塔内为八角形通直空心, 设有跳脚踏砖.
This book is one of an octagonal money.
这书是八角钱一本.
About 14 m high tower is octagonal seven-Zhuanta hollow.
塔高约14米,是八角七级空心砖塔.