The Collaborative International Dictionary of English v.0.48:

Embossment \Em*boss"ment\, n.
   1. The act of forming bosses or raised figures, or the state
      of being so formed.
      [1913 Webster]

   2. A bosslike prominence; figure in relief; raised work; jut;
      protuberance; esp., a combination of raised surfaces
      having a decorative effect. "The embossment of the
      figure." --Addison.
      [1913 Webster]

WordNet (r) 3.0 (2006):

embossment
    n 1: an impression produced by pressure or printing [syn:
         imprint, embossment]
    2: sculpture consisting of shapes carved on a surface so as to
       stand out from the surrounding background [syn: relief,
       relievo, rilievo, embossment, sculptural relief]

Moby Thesaurus II by Grady Ward, 1.0:

77 Moby Thesaurus words for "embossment":
   anaglyph, bas-relief, bellying, boldness, boss, bulging, bump,
   cameo, cameo glass, cavo-rilievo, colophon, concavity, convexity,
   cut glass, dactylogram, dactylograph, dent, dint, eminence,
   excrescence, excrescency, extrusion, fingerprint, footmark,
   footprint, footstep, fossil footprint, gibbosity, gibbousness,
   glyph, glyptograph, high relief, ichnite, ichnolite, impress,
   impression, imprint, indent, indentation, indention, intaglio,
   intaglio rilevato, intaglio rilievo, low relief, lump, mask, medal,
   medallion, pad, paw print, pawmark, pimple, plaquette, print,
   projection, prominence, protrusion, protuberance, protuberancy,
   pug, pugmark, relief, relievo, salience, salient, sculptured glass,
   seal, sigil, signet, stamp, step, stud, thumbmark, thumbprint,
   tuberosity, tuberousness, vestige