Pronunciation: (hal'uks), [key]
—pl. hal•lu•cesPronunciation: (hal'yu-sēz"). [key] Anat., Zool.
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.