Source : Webster's Revised Unabridged Dictionary (1913)

Medicinal \Me*dic"i*nal\, a. [L. medicinalis: cf. F.
   m['e]dicinal. See {Medicine}.]
   1. Having curative or palliative properties; used for the
      cure or alleviation of bodily disorders; as, medicinal
      tinctures, plants, or springs.

            Drop tears as fast as the Arabian trees Their
            medicinal gum.                        --Shak.

   2. Of or pertaining to medicine; medical.

Source : WordNet®

medicinal
     adj : having the properties of medicine; "medicative drugs";
           "medicinal herbs"; "medicinal properties" [syn: {medicative}]