Definify.com

Webster 1913 Edition

Adj.

[Gr.

νόμοσ

law, custom + [GREEK] sole of the foot.]

(Zool.)

Having a separate and simple tendon to flex the first toe, or hallux, as do passerine birds.

nomopelmous ‎(not comparable)

(zoology, archaic, rare) Having a separate and simple tendon to flex the first toe, or hallux.
Passerine birds are nomopelmous.