Source : Webster's Revised Unabridged Dictionary (1913)

Syndactyl \Syn*dac"tyl\, Syndactyle \Syn*dac"tyle\, a. [Syn- +
   Gr. ? finger, toe.] (Zo["o]l. & Med.)
   Having two or more digits wholly or partly united. See
   {Syndactylism}.

Syndactyle \Syn*dac"tyle\, n. [Pref. syn- + Gr. ? finger, toe:
   cf. F. syndactyle.] (Zo["o]l.)
   Any bird having syndactilous feet.