digitalis

from WordNet (r) 3.0 (2006)

digitalis
    n 1: a powerful cardiac stimulant obtained from foxglove [syn:
         {digitalis}, {digitalis glycoside}, {digitalin}]
    2: any of several plants of the genus Digitalis [syn:
       {foxglove}, {digitalis}]

from The Collaborative International Dictionary of English v.0.48

Digitalis \Dig`i*ta"lis\, n. [NL.: cf. F. digitale. So named
   (according to Linn[ae]us) from its finger-shaped corolla.]
   1. (Bot.) A genus of plants of the family
      {Schrophulariaceae}, including the foxglove.
      [1913 Webster]

   2. (Med.) The dried leaves of the purple foxglove ({Digitalis
      purpurea}), formerly used in heart disease, disturbance of
      the circulation, etc. Its use has been largely replaced by
      that of the pure active ingredient, {digitalin}. See
      {digitalin}.
      [1913 Webster]