polygon

A closed plane figure bounded by three or more line segments.

In geometry, a closed figure formed by the intersections of a number of straight lines, each with two others; especially, a plane figure of this sort; a figure with numerous angles

two sets of n lines, each cutting all the lines of the other set upon one curve of the nth order.

A train of sects whose last point is identical with the first.

In ordnance, a place especially arranged for making ballistic tests of guns, projectiles, armor, and powder. Same as proving-ground.

A plane figure having many angles, and consequently many sides; esp., one whose perimeter consists of more than four sides; any figure having many angles.

a polygonal figure, the sides of which, taken successively, represent, in length and direction, several forces acting simultaneously upon one point, so that the side necessary to complete the figure represents the resultant of those forces. Cf. Parallelogram of forces, under Parallelogram.

A plane figure bounded by straight edges.

The boundary of such a figure.

A figure comprising vertices and (not necessarily straight) edges, alternatingly.