grating

Harsh and unpleasant.

grating vocals

Annoying; tending to annoy.

A barrier that has parallel or crossed bars blocking a passage but admitting air.

A frame of iron bars to hold a fire.

The loose material that comes from something being grated.

Add a few gratings of nutmeg to the hot milk.

An optical system of close equidistant and parallel lines or bars, especially lines ruled on a polished surface, used for producing spectra by diffraction.

The strong wooden lattice used to cover a hatch, admitting light and air; also, a movable lattice used for the flooring of boats.