/ Dictionary / Index T tibiotarsus: Meaning and Definition of Find definitions for: tib•i•o•tar•sus Pronunciation: (tib"ē-ō-tär'sus), [key] — pl. -si the main bone of the leg of a bird, between the femur and tarsometatarsus, formed by the fusion of several tarsal bones with the tibia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tibia Tibullus Related Content Daily Word Quiz: malady Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language