An obstacle, barrier, or bulwark.
A barrier constructed across a road, especially as a military defence
A place of confrontation.
to close or block a road etc., using a barricade
to keep someone in (or out), using a blockade, especially ships in a port
A grating of parallel bars; a gridiron.
The third (or higher) electrode of a vacuum tube (triode or higher).
The pattern of starting positions of the drivers for a race.
An openwork ceiling above the stage or studio, used for affixing lights etc.
A rectangular array of squares or rectangles of equal size, such as in a crossword puzzle.
A tiling of the plane with regular polygons; a honeycomb.
A system for delivery of electricity, consisting of various substations, transformers and generators, connected by wire.
A battery-plate somewhat like a grating, especially a zinc plate in a primary battery, or a lead plate in a secondary or storage battery.
A system or structure of distributed computers working mostly on a peer-to-peer basis, used mainly to solve single and complex scientific or technical problems or to process data at high speeds (as in clusters).
A method of marking off maps into areas.
To mark with a grid.
To assign a reference grid to.