from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The innermost or first digit on the hind foot of certain mammals. The human hallux is commonly called the big toe.
- n. A homologous digit of a bird, reptile, or amphibian. In birds, it is often directed backward.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The big toe
from the GNU version of the Collaborative International Dictionary of English
- n. The first, or preaxial, digit of the hind limb, corresponding to the pollux in the fore limb; the great toe; the hind toe of birds.
from The Century Dictionary and Cyclopedia
- n. The innermost of the five digits which normally compose the hind foot of air-breathing vertebrates; in man, the great toe. See cut under foot.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the first largest innermost toe
"Over time, that insignificant value becomes significant," said Connors, who rattled through an abridged list of Khannouchi's ailments—patellofemoral syndrome, ankle impingement, bone spurs and something called hallux rigidus, which is degenerative arthritis in the big toe.
The hind toe is called the hallux, and corresponds to the thumb of the human hand, so that in grasping an object it can be made to meet any of the other toes.
Osteoarthritis of the first metatarsophalangeal joint (MPJ) of the foot, termed hallux limitus, is common and painful.
We treat disorders and deformities of the foot and ankle as well as clubfoot, vertical talus, hallux valgus, fractures and other trauma.
I never thought I'd pin my life's happiness (at least for the next three weeks) on one man's hallux.
Compared to other hornbills, ground hornbills have elongate tarsometatarsi, and they also have short toes, though strangely with the hallux being the longest of the four (note that this is rarely depicted accurately in artwork).
Its broad feet, prominent and curved claws, large hallux, and palms and soles covered in small tubercles indicated that it was a tree-climbing species.
No primatologist or anthropologist seems to have made anything of this, but I've yet to see anything that would rule out an arboreal leaping stage in (small) hominids that would explain the transition to walking bipedalism (indriids can't do this with their huge divergent hallux, but we grip branches with the instep instead).
Species of the latter are specialized for life at high latitudes, and have short tails, a reduced hallux and inflated auditory bullae.
The Latin name for this is hallux valgus (hallux for big toe, valgus for bent outward).