dead nettle

WordReference Random House Unabridged Dictionary of American English © 2025

dead′ net′tle, 

1. Plant Biology any of various plants belonging to the genus Lamium, of the mint family, native to the Old World, having opposite leaves and clusters of small reddish or white flowers.

• Middle English 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::

dead-nettle noun

1. any Eurasian plant of the genus Lamium, such as L. alba (white dead-nettle), having leaves resembling nettles but lacking stinging hairs: family Lamiaceae (labiates)