Any of several annual weeds of the genus Xanthium in the composite family, having small seedlike fruits enclosed within a prickly bur that clings readily to clothing or animal fur.

• 苍耳一种菊科苍耳属的一年生杂草，有包在多刺的刺果内的种子样小果实，其刺果易于粘到衣服或动物皮毛上