Grating - Definition
grating
adj 1: unpleasantly harsh or grating in sound; "a gravelly
voice" [syn: grating, gravelly, rasping, raspy,
rough, scratchy]
n 1: a barrier that has parallel or crossed bars blocking a
passage but admitting air [syn: grate, grating]
2: a frame of iron bars to hold a fire [syn: grate, grating]
3: 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 [syn: diffraction grating, grating]