Source : Webster's Revised Unabridged Dictionary (1913)

Furcula \Fur"cu*la\, n. [L., a forked prop, dim. of furca a
   fork.] (Anat.)
   A forked process; the wishbone or furculum.

Source : WordNet®

furcula
     n : a forked bone formed by the fusion of the clavicles of most
         birds
     [also: {furculae} (pl)]

furcula
     See {furculum}
     [also: {furculae} (pl)]