Source : Webster's Revised Unabridged Dictionary (1913)

Splenial \Sple"ni*al\, n. (Anat.)
   The splenial bone.

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.

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