sandpaper
nounUK /ˈsændˌpeɪpə/
US /ˈsændˌpeɪpər/
Sandpaper is rough paper you rub on wood to make it smooth.
He used sandpaper to smooth the wooden table before painting it.
OTHER MEANINGS
2. To rub a surface with sandpaper to make it smooth.
She sandpapered the old chair before varnishing it.
3. A rough, scratchy texture like that of sandpaper.
His voice had a sandpaper quality after shouting all day.
4. To treat or clean something by rubbing with an abrasive.
They sandpapered away the rust from the metal gate.