dead nettle

definition: a plants of the genus Pilea having drooping green flower clusters and smooth translucent stems and leaves
example:
speech part: noun
synonyms: clearweed
definition: coarse bristly Eurasian plant with white or reddish flowers and foliage resembling that of a nettle
example:
speech part: noun
synonyms: hemp nettle
definition: any of various plants of the genus Lamium having clusters of small usually purplish flowers with two lips
example:
speech part: noun
synonyms:
definition: foul-smelling perennial Eurasiatic herb with a green creeping rhizome
example:
speech part: noun
synonyms: hedge nettle

How dead nettle is being used?