Meaning of VERTEX in English

[ver.tex] n, pl ver.ti.ces also [L vertic-, vertex, vortic-, vortex whirl, whirlpool, top of the head, summit, fr. vertere to turn] (1570) 1 a: the point opposite to and farthest from the base in a figure b: a point (as of an angle, polygon, polyhedron, graph, or network) that terminates a line or curve or comprises the intersection of two or more lines or curves c: a point where an axis of an ellipse, parabola, or hyperbola intersects the curve itself

2: the top of the head

3: a principal or highest point: summit "the ~ of the hill"

Merriam-Webster English vocab.      Английский словарь Merriam Webster.