anomaliped

Century Dictionary and Cyclopedia

1. Syndactylous; having the middle toe united to the exterior by three phalanges, and to the interior by one only. The kingfisher is an example.
2. n. A syndactylous bird; a bird whose middle toe is united to the exterior by three phalanges, and to the interior by one only.

GNU Webster's 1913

1. adj. Having anomalous feet.
2. n. (Zoöl.) One of a group of perching birds, having the middle toe more or less united to the outer and inner ones.