Definition of vertices:
(n) :
(geometry) An angular point of a polygon, polyhedron or higher order polytope.
(n) :
The highest point, top or apex of something.
(n) :
The common point of the two rays that form an angle.
(n) :
(mathematics) A point on the curve with a local minimum or maximum of curvature.
(n) :
(graph theory) One of the elements of a graph joined or not by edges to other vertices.
(n) :
(anatomy) The highest surface on the skull; the crown of the head.