Source : Webster's Revised Unabridged Dictionary (1913)

Hermodactyl \Her`mo*dac"tyl\, n. [NL. hermodactylus, lit.,
   Hermes' finger; fr. Gr. ? Hermes + ? finger.] (med.)
   A heart-shaped bulbous root, about the size of a finger,
   brought from Turkey, formerly used as a cathartic.