sand·pa·per 
(săndpā′pər)
(săndpā′pər)n.
Heavy paper coated on one side with sand or other abrasive material and used for smoothing surfaces.
tr.v. sand·pa·pered, sand·pa·per·ing, sand·pa·pers
To rub with or as if with sandpaper.
sandpa′per·y adj.