Meaning of GRID in English

grid /ɡrɪd/ BrE AmE noun [countable]

[ Date: 1800-1900 ; Origin: gridiron ]

1 . a metal frame with bars across it ⇨ ↑ cattle grid

2 . a pattern of straight lines that cross each other and form squares:

Its streets were laid out in a grid pattern.

3 . a set of numbered lines printed on a map so that the exact position of any place can be referred to:

The pilots were just given a grid reference (=number referring to a point on a map) of the target.

4 . the network of electricity supply wires that connects ↑ power station s and provides electricity to buildings in an area:

the national grid (=the electricity supply in a country)

5 . ( also starting grid ) a set of starting positions for all the cars in a motor race

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.