The Collaborative International Dictionary of English v.0.48:

Deform \De*form"\, v. t. [imp. & p. p. Deformed; p. pr. & vb.
   n. Deforming.] [L. deformare; de- + formare to form, shape,
   fr. forma: cf. F. d['e]former. See Form.]
   1. To spoil the form of; to mar in form; to misshape; to
      disfigure.
      [1913 Webster]

            Deformed, unfinished, sent before my time
            Into this breathing world.            --Shak.
      [1913 Webster]

   2. To render displeasing; to deprive of comeliness, grace, or
      perfection; to dishonor.
      [1913 Webster]

            Above those passions that this world deform.
                                                  --Thomson.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Deform \De*form"\, a. [L. deformis; de- + forma form: cf. OF.
   deforme, F. difforme. Cf. Difform.]
   Deformed; misshapen; shapeless; horrid. [Obs.]
   [1913 Webster]

         Sight so deform what heart of rock could long
         Dry-eyed behold?                         --Milton.
   [1913 Webster]