Grid

From open-dictionary.com - the free dictionary.

/gr ih d/

Noun:

1. A series of squares marked off on paper, such as a crossword puzzle.
2. A system for delivery of electricity, consisting of various substations, transformers and generators, connected by wire.

   You can't turn off the building from here, you have to shut down the whole grid. - Power technician in the movie, Die Hard.

3. A system or structure of distributed computers working mostly on a Peer-2-Peer basis, such structures are known as a computational grid or simply grid computing. These systems are mostly used to solve a single and complex scientific or technical problem, or to process data at high speeds (as in clusters).
4. A method of marking off maps into areas.

See Also: square, rectangle.