cannonball tree

cannonball-tree的词性：
n.（名词）

1. A South American tree (Couroupita guianensis) bearing globose, woody fruits on its trunk and main branches. The hard shells of the fruits are used to make containers and utensils.
炮弹树：南美洲一种树木（炮弹树 贵安玉蕊） ，树干和主要的枝干上结球状木质的果实。这种果实的硬壳可用于做容器和器具