Source : Webster's Revised Unabridged Dictionary (1913)

Grille \Grille\, a. [F. See {Grill}, v. t.]
   A lattice or grating.

         The grille which formed part of the gate. --L.
                                                  Oliphant.

Source : WordNet®

grille
     n 1: small opening (like a window in a door) through which
          business can be transacted [syn: {wicket}, {lattice}]
     2: grating that admits cooling air to car's radiator [syn: {radiator
        grille}]
     3: a framework of metal bars used as a partition or a grate;
        "he cooked hamburgers on the grill" [syn: {grill}, {grillwork}]