halluces

< /ˈhæl yəˌsiz/. Anatomy, Zoology.

1. the first or innermost digit of the foot of humans and other primates or of the hind foot of other mammals; great toe; big toe.
2. the comparable, usually backward-directed digit in birds.

noun

1. the first digit on the hind foot of a mammal, bird, reptile, or amphibian; the big toe of man

n.

1831, from Modern Latin hallux, corruption of allex “great toe.”

n. pl. hal•lu•ces (hăl′yə-sēz′, hăl′ə-)

1. The big toe.
2. A homologous or similar digit on the hind foot of certain mammals.