植物的刺
4.A hairlike or bristlelike outgrowth, as from the epidermis of a plant.
7.Any of several related or similar plants, such as the bur cucumber or the squirting cucumber
8.a family of plants of order Urticales including many nettles with stinging hairs.
10.erect annual of tropical central Asia and Africa having a pair of divergent spines at most leaf nodes.

