D defs.my
Entry 1 sense Webster, 1913

Splenium

· Sple·ni·um · IPA /ˈspliː.ni.əm/
01 n. The thickened posterior border of the corpus callosum; -- so called in allusion to its shape.
  1. 1.
    The thickened posterior border of the corpus callosum; -- so called in allusion to its shape.(Anat.)