sandpaper
/ˈsændpeɪpər/Definitions
1. noun
A coated paper or cloth, used for smoothing or polishing wood, metal, or other surfaces
“She used sandpaper to smooth out the rough edges of the table.”
2. verb
To rub or scrape something with sandpaper, in order to smooth or polish it
“He had to sandpaper the old floor before refinishing it.”