The Collaborative International Dictionary
hoarhound
Horehound \Hore"hound`\, n. [OE. horehune, AS. h[=a]rhune; h[=a]r hoar, gray + hune horehound; cf. L. cunila a species of organum, Gr. ?, Skr. kn?y to smell.] (Bot.)
A plant of the genus Marrubium ( Marrubium vulgare), which has a bitter taste, and is a weak tonic, used as a household remedy for colds, coughing, etc. [Written also hoarhound.]
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A lozenge or tablet, usually sweetened, containing extract of horehound, used as a remedy for a cough or a sore throat.
Fetid horehound, or Black horehound, a disagreeable plant resembling horehound ( Ballota nigra).
Water horehound, a species of the genus Lycopus, resembling mint, but not aromatic.
Wiktionary
hoarhound
n. (alternative form of horehound English)