Meaning : A barrier that has parallel or crossed bars blocking a passage but admitting air.
Synonyms : grate
Meaning : A frame of iron bars to hold a fire.
Synonyms : grate
Meaning : 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.
Synonyms : diffraction grating
Grating meaning in Bengali (Bangla).