ˈsplēnēəm noun
( plural sple·nia -nēə)
Etymology: New Latin, from Latin, plaster, patch, from Greek splēnion bandage, spleenless person, spleenwort, diminutive of splēn spleen — more at spleen
: the thick rounded fold forming the posterior border of the corpus callosum and being continuous by its undersurface with the fornix