horehound

(redirected from black horehounds)
Also found in: Dictionary, Thesaurus, Encyclopedia.

hore·hound

, hoarhound (hōr-hownd),
Marrubium vulgare (family Labitae); bitter principle is marrubium, a volatile oil. A compound alleged to have expectorant properties and often found in cough drops and other patent medicines.
[O.E. hār, hoary, + hūne, herb]

horehound

(hôr′hound′)
n.
1.
a. An aromatic plant (Marrubium vulgare) in the mint family having leaves with white pubescence and numerous white flowers in axillary cymes, native to Eurasia. The leaves yield a bitter extract used in flavoring and as a cough remedy.
b. A candy or preparation flavored with this extract.
2. Any of several similar plants in the mint family, especially Ballota nigra.

horehound,

n Latin name:
Marrubium vulgare; parts used: leaves, flowers; uses: diuretic, abortifacient, congestion, coughs, respiratory conditions, diarrhea, laxative; precautions: pregnancy, lactation, children; can cause arrythmias, nausea. Also called
common horehound, hoar-hound, hounsbane, marvel, or
white horehound.