grating - noun

a barrier that has parallel or crossed bars blocking a passage but admitting air

a frame of iron bars to hold a fire

optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum

grating - adjective

• unpleasantly harsh or grating in sound

grating - thesaurus

grate   gravelly   rasping   raspy   rough   scratchy