Source : Webster's Revised Unabridged Dictionary (1913)

Postclavicle \Post*clav"i*cle\, n. [Pref. post- + clavicle.]
   (Anat.)
   A bone in the pectoral girdle of many fishes projecting
   backward from the clavicle. -- {Post`*cla*vic"u*lar}, a.