Noun: thoroughwort 'thur-u,wurt [N. Amer], 'thú-ru,wurt [Brit]
- Perennial herb of southeastern United States having white-rayed flower heads; formerly used in folk medicine
"Thoroughwort lined the edges of the wetland";
- boneset, agueweed, Eupatorium perfoliatum
Derived forms: thoroughworts
Type of: herb, herbaceous plant
Part of: Eupatorium, genus Eupatorium
Encyclopedia: Thoroughwort