Source : Webster's Revised Unabridged Dictionary (1913)

Boneset \Bone"set`\, n. (Bot.)
   A medicinal plant, the thoroughwort ({Eupatorium
   perfoliatum}). Its properties are diaphoretic and tonic.

Source : WordNet®

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