Word Study
syndactyle
CIDE DICTIONARY
syndactyle, a. [Syn- + Gr. finger, toe.].
Having two or more digits wholly or partly united. See Syndactylism. [Webster 1913 Suppl.]
syndactyle, n. [Pref. syn- + Gr. finger, toe: cf. F. syndactyle.].
Any bird having syndactilous feet. [1913 Webster]
For further exploring for "syndactyle" in Webster Dictionary Online