a framework of spaced bars that are parallel to or cross each other; a grating.
the metal grids had been pulled across the foyer
a network of lines that cross each other to form a series of squares or rectangles.
a grid of tree-lined streets
a number of computers linked together via the Internet so that their combined power may be harnessed to work on difficult problems.
This grid links powerful computers in California, Texas, the Midwest and Pennsylvania.