'Heterodactyl' definitions:
Definition of 'heterodactyl'
(from WordNet)
adjective
(of bird feet) having the first and second toes directed backward the third and fourth forward [ant: zygodactyl]
Definition of 'Heterodactyl'
From: GCIDE
- Heterodactyl \Het`er*o*dac"tyl\, a. (Zool.) Heterodactylous. -- n. One of the Heterodactyl[ae]. [1913 Webster]