prickly ash
noun
1- a spiny North American shrub or tree with prickly branches and bark that can be used medicinally花椒（可入药）。
1.1
- Genus Zanthoxylum, family Rutaceae: the northern Z. americanum and the southern Z. clava-herculis (also called HERCULES' CLUB).花椒属, 芸香科：包括美国花椒（拉丁名Z. americanum）和美国南部刺椒（拉丁名Z. clava-herculis）（亦称HERCULES' CLUB）。
1.2
- mass noun a medicinal preparation of the bark of these trees（药用）花椒树皮。