The Collaborative International Dictionary of English v.0.48:

Sculptor \Sculp"tor\, n. [L. sculptor, fr. sculpere, sculptum,
   to carve; cf. scalpere to cut, carve, scratch, and Gr. ? to
   carve: cf. F. sculpteur.]
   1. One who sculptures; one whose occupation is to carve
      statues, or works of sculpture.
      [1913 Webster]

   2. Hence, an artist who designs works of sculpture, his first
      studies and his finished model being usually in a plastic
      material, from which model the marble is cut, or the
      bronze is cast.
      [1913 Webster]

WordNet (r) 3.0 (2006):

sculptor
    n 1: an artist who creates sculptures [syn: sculptor,
         sculpturer, carver, statue maker]
    2: a faint constellation in the southern hemisphere near Phoenix
       and Cetus

Moby Thesaurus II by Grady Ward, 1.0:

70 Moby Thesaurus words for "sculptor":
   Arp, CYSP sculpture, French, Maillol, Michelangelo, Milles, Moore,
   Oldenburg, Phidias, Picasso, Pisano, Praxiteles, Saint-Gaudens,
   anaglyptics, anaglyptography, architectural sculpture,
   bone-carving, carver, casting, ceroplastics, chaser, chasing,
   clay modeler, clay sculpture, decorative sculpture, earth art,
   earth artist, embossing, engraving, figurer, figuriste, founding,
   garden sculpture, gem carver, gem-cutting, glass sculpture,
   glyptic, graver, ivory-carving, lost-wax process, mason,
   metal sculpture, modeler, modeling, molder, molding,
   monumental mason, monumental sculpture, paper sculpture,
   plaster casting, plastic art, portrait sculpture, relief,
   relief-carving, relievo, sculptress, sculpture, sculpturer,
   sculpturing, shell-carving, statuary, stone sculpture, stonecutter,
   stonecutting, wax modeler, whittling, wire sculpture, wood carver,
   wood carving, xyloglyphy