"grids" in the noun sense
1. grid
a pattern of regularly spaced horizontal and vertical lines
2. power system, power grid, grid
a system of high tension cables by which electrical power is distributed throughout a region
3. grid, storage-battery grid
a perforated or corrugated metal plate used in a storage battery as a conductor and support for the active material
4. grid, control grid
an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube
5. grid, gridiron
a cooking utensil of parallel metal bars used to grill fish or meat
Source: WordNet® (An amazing lexical database of English)
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