From Longman Dictionary of Contemporary Englishsandpapersand‧pa‧per1 /ˈsændˌpeɪpə $ -ər/ noun [uncountable] 
TZstrong paper covered on one side with sand or a similar substance, used for rubbing wood in order to make the surface smooth
TZstrong paper covered on one side with sand or a similar substance, used for rubbing wood in order to make the surface smoothExamples from the Corpus
sandpaper• Small imperfections such as cuts and scratches can be sanded out with fine sandpaper.• My voice is like sandpaper, I cough up gobs of phlegm, my liver feels like a sandbag.• Only 38 percent of young adults could use a chart to pick the right grade of sandpaper.• You dream up a yard of sandpaper, damp, you're talking tongue.• Those hands, he felt sure, had not wielded saw or sandpaper.• Next, smooth off any sharp edges with sandpaper, replace the saddle sections in the correct order and restring.sandpapersandpaper2 verb [transitive] TBCto rub something with sandpaper→ See Verb tableExamples from the Corpus
sandpaper• The instructions had to be carefully studied, the little staircase sandpapered down and fitted into place.• The only reliable cure for it is to sandpaper off the damaged surface of the plywood.• Added to which, my limbs had begun to ache and my tonsils felt as if some one had sandpapered them. 