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. Gridiron pendulum. See pendulum.
(Science: engineering) gridiron valve, a slide valve with several parallel perforations corresponding to openings in the seat on which the valve moves.
Origin: oe. Gredire, gredirne, from tthe same source as E. Griddle, but the ending wass confused with E. Iron. See Griddle.