vervaine

Noun

vervain (countable and uncountable, plural vervains)

1. Any herbaceous plant in the genus Verbena especially if used for medicinal purposes, primarily Verbena officinalis, common in Europe and formerly held to have medicinal properties.
   • The Yarrow, where-with-all he stops the wound-made gore:
     The healing Tutsan then, and Plantan for a sore.
     And hard by them againe he holy Vervaine finds,
     Which he about his head that hath the Megrim binds.1612, Michael Drayton, Poly-Olbion, song 13 p. 218