Having hooves which are not cloven; having the toes of each foot joined together (as by being webbed). Now historical and rare.

Esp. of a bird or other animal: having webbed feet.

having webs between the toes; web-footed.

Having some or all of the fingers or toes wholly or partly united, as certain mammals (e.g. kangaroos) and birds (e.g. kingfishers and web-footed…

Ornithology. = syndactyl, adj. n. Obsolete.