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Noun: black horehound  blak 'hor,hawnd
  1. Ill-smelling European herb with rugose leaves and whorls of dark purple flowers
    - black archangel, fetid horehound, stinking horehound, Ballota nigra

Derived forms: black horehounds

Type of: herb, herbaceous plant

Part of: Ballota, genus Ballota

Encyclopedia: Black horehound