vertex

The zenith, the point overhead; the apex of a conical mountain.

vertex
vertex (vortex; cf. Quint. 1, 7, 25 The archaic form vortex was already disused in Cicero's time; ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
vertex
vertex (vortex) icis, m VERT-, a whirl, eddy, whirlpool, vortex : torto vertice torrens, V.: (flum...

An Elementary Latin Dictionary
Vertex
·noun The top, or crown, of the head. II. Vertex ·noun The zenith, or the point of the heavens dire...

Webster's Dictionary of the English Language