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Noun: thoroughwort  'thur-u,wurt [N. Amer], 'thú-ru,wurt [Brit]
  1. Perennial herb of southeastern United States having white-rayed flower heads; formerly used as in folk medicine
    - boneset, agueweed, Eupatorium perfoliatum

Derived forms: thoroughworts

Type of: herb, herbaceous plant

Part of: Eupatorium, genus Eupatorium

Encyclopedia: Thoroughwort