Meaning of GRID in English

[noun] [C] - a pattern of lines, bars etc. that cross over each other to make a set of squaresA metal grid had been placed across the hole to stop people falling in.In Barcelona the streets are laid out in/on a grid system.The photograph is divided into a grid of small squares.See also gridiron.A grid is also a system of wires through which electricity is connected to different power stations across a region.the national grid.A grid reference is a position on a map which has been marked into squares by numbered lines going from one side to the other and from top to bottom so that you can find places easily on it.What's the grid reference of the village on this map?

Cambridge English vocab.      Кембриджский английский словарь.