C2 adjective, noun /ˈɡreɪtɪŋ/
grating
sonido desagradable / rejilla de metal
Meaning
Harsh and unpleasant to the senses, especially sound; a framework of bars covering an opening.
Example
The teacher's grating voice made it hard to concentrate.
La voz desagradable del maestro hacía difícil concentrarse.