- any of several plants of the genus Stachys, belonging to the mint family, especially S. palustris, having hairy stems and leaves and whorled clusters of small, reddish flowers.
- kidney vetch.
- any of various plants of the genus Stachys, such as S. arvensis (field woundwort), having purple, scarlet, yellow, or white flowers and formerly used for dressing wounds: family Lamiaceae (labiates)
- any of various other plants used in this way
