Yes, grids is a Scrabble word!

Noun

1. A pattern of regularly spaced horizontal and vertical lines

2. A system of high tension cables by which electrical power is distributed throughout a region

3. A perforated or corrugated metal plate used in a storage battery as a conductor and support for the active material

4. An electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube

5. A cooking utensil of parallel metal bars; used to grill fish or meat