Splenial bone

from The Collaborative International Dictionary of English v.0.48

Splenial \Sple"ni*al\, a. [L. splenium a plaster, a patch, Gr.
   ???? a bandage.] (Anat.)
   (a) Designating the splenial bone.
   (b) Of or pertaining to the splenial bone or splenius muscle.
       [1913 Webster]

   {Splenial bone} (Anat.), a thin splintlike bone on the inner
      side of the proximal portion of the mandible of many
      vertebrates.
      [1913 Webster]