Webster's Revised Unabridged Dictionary · 1913

Horehound

Horehound , noun

[Old English horehune, Anglo-Saxon hārhune; hār hoar, gray + hune horehound; compare Latin cunila a species of organum, Greek {not transcribed}, Sanskrit kn{not transcribed}y to smell.]

1.
(Botany) 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.
2.
A lozenge or tablet, usually sweetened, containing extract of horehound, used as a remedy for a cough or a sore throat.
Collocations (2)
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.