a gridiron is a form of:

Gridiron



noun
1.
(a framework of metal bars on which to broil meat, etc.. something that looks like a gndiron, especially a football field, a football field) ចង្អើរ
ENGLISH MEANING
noun
1.
A grated iron utensil for broiling flesh and fish over coals.
2.
An openwork frame on which vessels are placed for examination, cleaning, and repairs.
3.
A football field.