[ 'grɪdʌɪən ]
■ noun
1》 a frame of parallel metal bars used for grilling meat or fish over an open fire.
2》 a frame of parallel beams for supporting a ship in dock.
3》 a field for American football, marked with regularly spaced parallel lines.
↘ N. Amer. the game of American football.
4》 a grid pattern, especially of streets.
Origin
ME gredire , alt. of gredile 'griddle' by assoc. with iron .