The Collaborative International Dictionary of English v.0.48:

Disfigure \Dis*fig"ure\ (?; 135), v. t. [imp. & p. p.
   Disfigured; p. pr. & vb. n. Disfiguring.] [OF.
   desfigurer, F. d['e]figurer; pref. des- (L. dis-) + figurer
   to fashion, shape, fr. L. figurare, fr. figura figure. See
   Figure, and cf. Defiguration.]
   To mar the figure of; to render less complete, perfect, or
   beautiful in appearance; to deface; to deform.
   [1913 Webster]

         Disfiguring not God's likeness, but their own.
                                                  --Milton.

   Syn: To deface; deform; mar; injure.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Disfigure \Dis*fig"ure\, n.
   Disfigurement; deformity. [Obs.] --Chaucer.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disfigure
    v 1: mar or spoil the appearance of; "scars defaced her cheeks";
         "The vandals disfigured the statue" [syn: deface,
         disfigure, blemish]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "disfigure":
   blemish, blot, check, cicatrize, crack, craze, deface, deform,
   disproportion, distort, dysphemize, flaw, kink, look a fright,
   look a mess, look bad, look like hell, look something terrible,
   mar, misshape, mutilate, offend, offend the eye, scab, scar,
   scarify, split, spoil, truncate, twist, uglify, warp