- a fixed frame of bars or the like covering an opening to exclude persons, animals, coarse material, or objects while admitting light, air, or fine material.
- diffraction grating.
- irritating or unpleasant to one's feelings.
- (of a sound or noise) harsh, discordant, or rasping.
- a framework of metal bars in the form of a grille set into a wall, pavement, etc, serving as a cover or guard but admitting air and sometimes light
- short for diffraction grating
- (of sounds) harsh and rasping
- annoying; irritating
- something produced by grating
