Source : Webster's Revised Unabridged Dictionary (1913)

Tibiotarsus \Tib`i*o*tar"sus\, n.; pl. {Tibiotarsi}. (Anat.)
   The large bone between the femur and tarsometatarsus in the
   leg of a bird. It is formed by the union of the proximal part
   of the tarsus with the tibia.