noun

1. a framework of parallel bars; grating
2. a network of evenly spaced horizontal and vertical bars or lines, esp. one for locating points when placed over a map, chart, etc.
3. a system for distributing electric power throughout a region
4. on a speedway, the order in which racing cars start
5. Elec. a conductive framework of metal plates in a storage cell or battery, that contains lead or a lead compound, esp. a lead oxide, and reacts with the electrolyte
6. Electronics any gridlike or spiral-shaped electrode positioned between a cathode and anode to control the flow of electrons or ions in an electron tube

Etymology: short for gridiron

adjective

Etymology: < gridiron, sense