Source : Webster's Revised Unabridged Dictionary (1913)

Pilocarpine \Pi`lo*car"pine\, n. [From NL. {Pilocarpus
   pennatifolius} jaborandi; L. pilus hair + Gr. karpo`s fruit:
   cf. F. pilocarpine.] (Chem.)
   An alkaloid extracted from jaborandi ({Pilocarpus
   pennatifolius}) as a white amorphous or crystalline substance
   which has a peculiar effect on the vasomotor system.

Source : WordNet®

pilocarpine
     n : cholinergic alkaloid used in eyedrops to treat glaucoma