grating:- a frame of iron bars to hold a fire (Princeton WordNet 3.1)
grating:- a barrier that has parallel or crossed bars blocking a passage but admitting air (Princeton WordNet 3.1)
grating:- unpleasantly harsh or grating in sound (Princeton WordNet 3.1)
grating:- 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 (Princeton WordNet 3.1)
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