01 n. A partition, covering, or frame of parallel or cross bars; a latticework resembling a window grate; as, the grating of a prison or convent.
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1.
A partition, covering, or frame of parallel or cross bars; a latticework resembling a window grate; as, the grating of a prison or convent.
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2.
A system of close equidistant parallel lines or bars, esp. lines ruled on a polished surface, used for producing spectra by diffraction; -- called also diffraction grating.(Optics) Also: diffraction grating
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3.
The strong wooden lattice used to cover a hatch, admitting light and air; also, a movable Lattice used for the flooring of boats.(Naut.)