boneset

from WordNet (r) 3.0 (2006)

boneset
    n 1: European herb having small white, pink or purple flowers;
         naturalized as a weed in North America [syn: {common
         comfrey}, {boneset}, {Symphytum officinale}]
    2: perennial herb of southeastern United States having white-
       rayed flower heads; formerly used as in folk medicine [syn:
       {boneset}, {agueweed}, {thoroughwort}, {Eupatorium
       perfoliatum}]

from The Collaborative International Dictionary of English v.0.48

Boneset \Bone"set`\ (-s[e^]t`), n. (Bot.)
   A medicinal plant, the thoroughwort ({Eupatorium
   perfoliatum}). Its properties are diaphoretic and tonic.
   [1913 Webster]