பொருள் : A barrier that has parallel or crossed bars blocking a passage but admitting air.
ஒத்த சொற்கள் : grate
பொருள் : A frame of iron bars to hold a fire.
ஒத்த சொற்கள் : grate
பொருள் : 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.
ஒத்த சொற்கள் : diffraction grating