Noun: Ballota nigra
- Ill-smelling European herb with rugose leaves and whorls of dark purple flowers
"Ballota nigra grew wild along the hedgerow despite its unpleasant smell";
- black horehound, black archangel, fetid horehound, stinking horehound
Type of: herb, herbaceous plant
Part of: Ballota, genus Ballota
Encyclopedia: Ballota nigra