The Collaborative International Dictionary
Tylarus
Tylarus \Ty"la*rus\, n.; pl. Tylari. [NL., fr. Gr. ty`lh a cushion.] (Zo["o]l.) One of the pads on the under surface of the toes of birds.
Wiktionary
tylarus
n. (context zoology English) One of the pads on the undersurface of the toes of birds.