verb/ɡɾaˈtaɾ/
to clean or polish with a wire brush
“El herrero grató la pieza de metal para darle un acabado suave.” — The blacksmith polished the piece of metal to give it a smooth finish.
Related: grata
Borrowed from Occitan or Provençal gratar (“to scratch”), of Germanic origin, from Proto-Germanic *krattōną, from Proto-Indo-European *gred-, see also English scratch.