Source : Webster's Revised Unabridged Dictionary (1913)

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 including the foxglove.

   2. (Med.) The dried leaves of the purple foxglove ({Digitalis
      purpurea}), used in heart disease, disturbance of the
      circulation, etc.

Source : WordNet®

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