dead nettle n foul-smelling perennial Eurasiatic herb with a green creeping rhizome n any of various plants of the genus Lamium having clusters of small usually purplish flowers with two lips n coarse bristly Eurasian plant with white or reddish flowers and foliage resembling that of a nettle; common as a weed in United States n a plants of the genus Pilea having drooping green flower clusters and smooth translucent stems and leaves Synonym(s) hedge nettle Stachys sylvatica hemp nettle Galeopsis tetrahit richweed clearweed Pilea pumilla