[ hal-uh ks ]
/ ˈhæl əks /

noun, plural hal·lu·ces [hal-yuh-seez] /ˈhæl yəˌsiz/. Anatomy, Zoology.

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.
the comparable, usually backward-directed digit in birds.

Nearby words

  1. hallucination,
  2. hallucinatory,
  3. hallucinogen,
  4. hallucinogenic,
  5. hallucinosis,
  6. hallux dolorosus,
  7. hallux flexus,
  8. hallux rigidus,
  9. hallux valgus,
  10. hallux varus

Origin of hallux

1825–35; < Late Latin (h)allux, for Latin hallus, by association with pollex thumb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for halluces


/ (ˈhæləks) /


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

Word Origin for hallux

C19: New Latin, from Late Latin allex big toe

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for halluces



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

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for halluces


[ hăləks ]

n. pl. hal•lu•ces (hălyə-sēz′, hălə-)

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

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.