Noun grid has 4 senses
  1. power system, power grid, grid - a system of high tension cables by which electrical power is distributed throughout a region
    --1 is a kind of facility, installation
    --1 is a part of infrastructure, base
    --1 has parts:
     electric main; power line, power cable; power station, power plant, powerhouse
  2. grid, reference grid - a network of horizontal and vertical lines that provide coordinates for locating points on an image
    --2 is a kind of network
  3. grid, control grid - an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube
    --3 is a kind of electrode
    --3 is a part of
     tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve
  4. grid, gridiron - a cooking utensil of parallel metal bars; used to grill fish or meat
    --4 is a kind of cooking utensil, cookware