牛膝

牛膝	niú xī	Achyranthes bidentata (root used in Chinese medicine)
牛	Niú	surname Niu
牛	niú	ox / cow / bull / CL:条,头 / newton (abbr. for 牛顿) / (slang) awesome
膝	xī	old variant of 膝
膝	xī	knee