a grating of crossed bars; gridiron.

Electricity .

a metallic framework employed in a storage cell or battery for conducting the electric current and supporting the active material.

a system of electrical distribution serving a large area, esp. by means of high-tension lines.

Electronics . an electrode in a vacuum tube, usually consisting of parallel wires, a coil of wire, or a screen, for controlling the flow of electrons between the other electrodes.

Surveying . a basic system of reference lines for a region, consisting of straight lines intersecting at right angles.

a network of horizontal and perpendicular lines, uniformly spaced, for locating points on a map, chart, or aerial photograph by means of a system of coordinates.

Architecture . a rectangular system of coordinates used in locating the principal elements of a plan.

grillage.

Football . gridiron ( def. 1 ) .

noun

framework , grill , grille , network , lattice , grate , plate , terminal , layer , gridiron , mesh