1. 
[syn: defacement, disfigurement, disfiguration]
The Collaborative International Dictionary of English v.0.48:
Defacement \De*face"ment\, n.
   1. The act of defacing, or the condition of being defaced;
      injury to the surface or exterior; obliteration.
      [1913 Webster]
   2. That which mars or disfigures. --Bacon.
      [1913 Webster]
WordNet (r) 3.0 (2006):
defacement
    n 1: the act of damaging the appearance or surface of something;
         "the defacement of an Italian mosaic during the Turkish
         invasion"; "he objected to the dam's massive disfigurement
         of the landscape" [syn: defacement, disfigurement,
         disfiguration]