Pronunciation: (tär"sō-met"u-tär'sus), [key]
—pl. -siPronunciation: (-sī, -sē). [key] Ornith.
the large bone in the lower leg of a bird with which the toe bones articulate, formed by the fusion of tarsal and metatarsal bones.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.