adj. 1 jarring, strident, raucous, harsh, discordant, dissonant, unharmonious, offensive, irritating, irksome, annoying, vexatious, galling I find the noise of chalk squeaking on the blackboard very grating 2 grinding, gritty, squeaky, jangling, screeching, creaking, shrill, piercing, squawking, croaking, rasping The grating noise you hear is my fridge motor
n. 3 grate, grid, reticle or reticule, grille, lattice, trellis, screen, network, reticulation When a beam of light is directed through the fine grating, odd patterns are formed