vertex

n. peak, highest point, top, summit

Vertex (Latin: corner; plural vertices or vertexes) may refer to:MathematicsVertex (geometry), a corner point of a polygon, polyhedron or general polytope, or by extension of a computer graphics point object.Vertex (graph theory), a node in a graphVertex (curve), a local extreme point of curvature
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n. vertex, peak, highest point

(n.)
The zenith, or the point of the heavens directly overhead.
  

(n.)
The top, or crown, of the head.
  

(n.)
The point in any figure opposite to, and farthest from, the base; the terminating point of some particular line or lines in a figure or a curve; the top, or the point opposite the base.
  

(n.)
A turning point; the principal or highest point; top; summit; crown; apex.
  

The top of the head, in medicine. In Latin, vertex means a whirlpool, whirlwind, top of the mountain, or top of the head, it is thought, because the hairs there often form a whorl. In a vertex delivery, the top of the head comes first.