Source : Webster's Revised Unabridged Dictionary (1913)

``A doctor of physik.'' --Chaucer.

   2. A specific internal application for the cure or relief of
      sickness; a remedy for disease; a medicine.

   3. Specifically, a medicine that purges; a cathartic.

   4. A physician. [R.] --Shak.

   {Physic nut} (Bot.), a small tropical American euphorbiaceous
      tree ({Jatropha Curcas}), and its seeds, which are well
      flavored, but contain a drastic oil which renders them
      dangerous if eaten in large quantities.

Source : WordNet®

physic nut
     n : small tropical American tree yielding purple dye and a
         tanning extract and bearing physic nuts containing a
         purgative oil that is poisonous in large quantities [syn:
          {Jatropha curcus}]