The Collaborative International Dictionary
Splenial bone
Splenial \Sple"ni*al\, a. [L. splenium a plaster, a patch, Gr. ???? a bandage.] (Anat.)
Designating the splenial bone.
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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.
Wiktionary
splenial bone
n. A small bone in the lower jaw of some reptiles and birds