The Collaborative International Dictionary of English v.0.48:

Grated \Grat"ed\, a. [From 2d Grate.]
   Furnished with a grate or grating; as, grated windows.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Grate \Grate\, v. t. [imp. & p. p. Grated; p. pr. & vb. n.
   Grating.]
   To furnish with grates; to protect with a grating or
   crossbars; as, to grate a window.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

56 Moby Thesaurus words for "grated":
   barred, branny, cancellated, chalklike, chalky, comminute,
   comminuted, crossbarred, crushed, detrital, detrited,
   disintegrated, dusty, efflorescent, farinaceous, filigreed, fine,
   flaky, floury, furfuraceous, gone to dust, gridded, ground,
   impalpable, laced, lacelike, lacy, latticelike, levigated, mealy,
   meshed, meshy, milled, mullioned, netlike, netted, netty, pestled,
   plexiform, powdered, powdery, pulverant, pulverized, pulverulent,
   reduced to powder, reticular, reticulate, reticulated, retiform,
   scaly, scobicular, sharded, shredded, streaked, striped,
   triturated