Fornix

·noun Esp., two longitudinal bands of white nervous tissue beneath the lateral ventricles of the brain.

II. Fornix ·noun An arch or fold; as, the fornix, or vault, of the cranium; the fornix, or reflection, of the conjuctiva.

fornix
fornix, ĭcis, m., an arch or vault (cf.: camera, testudo, tholus, lacunar). I Lit.: Democritus inv...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
fornix
fornix icis, m an arch, vault, cellar: huius (Verris) in foro Syracusis: camera lapideis fornicibus...

An Elementary Latin Dictionary