grating

1. A barrier that has parallel or crossed bars blocking a passage but admitting air (synset 103459651)
   is a type of: barrier - a structure or object that impedes free movement
   subtypes: grille, radiator grille - grating that admits cooling air to car's radiator
   same as: grate
2. A frame of iron bars to hold a fire (synset 103459480)
   is a type of: frame, framework - a structure supporting or containing something
   is a part of:

   • furnace - an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc.
   • cooking stove, kitchen range, kitchen stove, range, stove - a kitchen appliance used for cooking food
   same as: grate
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 (synset 103199222)
   is a type of: optical device - a device for producing or controlling light
   subtypes: echelon - a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
   same as: diffraction grating

1. Unpleasantly harsh or grating in sound (synset 300300342)
   "a gravelly voice"
   similar to: cacophonic, cacophonous - having an unpleasant sound
   same as: gravelly, rasping, raspy, rough, scratchy

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