The Collaborative International Dictionary of English v.0.48:

Sandpaper \Sand"pa`per\, n.
   Paper covered on one side with sand glued fast, -- used for
   smoothing and polishing.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sandpaper \Sand"pa`per\, v. t.
   To smooth or polish with sandpaper; as, to sandpaper a door.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sandpaper
    n 1: stiff paper coated with powdered emery or sand [syn: emery
         paper, sandpaper]
    v 1: rub with sandpaper; "sandpaper the wooden surface" [syn:
         sandpaper, sand]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "sandpaper":
   broken ground, broken water, buff, burnish, chop, corduroy,
   corduroy road, corrugation, dress, emery, file, furbish,
   goose bumps, goose pimples, gooseflesh, grind, horripilation, lop,
   polish, pumice, ripple, rough, rub up, sand, sandblast, shine,
   smooth, washboard