- Eupatorium rugosum
- nounAmerican herb having flat-topped clusters of small white flower heads; reputedly a cause of trembles and milk sickness; sometimes placed in genus Eupatorium• Syn: ↑white snakeroot, ↑white sanicle, ↑Ageratina altissima• Hypernyms: ↑herb, ↑herbaceous plant• Member Holonyms: ↑Ageratina, ↑genus Ageratina
Useful english dictionary. 2012.