noun.
The popular name of several plants of the natural order Labiatæ.
noun.
The black or stinking hoarhound, Ballota nigra, a common European weed in waste places near towns and villages. The flowers are purple, and the whole plant is fetid and unattractive.
noun.
The water-hoarhound, one of various species of Lycopus, particularly L. Europæus, a native of Europe.