The Collaborative International Dictionary of English v.0.48:

Deplume \De*plume"\, v. t. [imp. & p. p. Deplumed; p. pr. &
   vb. n. Depluming.] [LL. deplumare; L. de- + plumare to
   cover with feathers, pluma feather: cf. deplumis featherless,
   and F. d['e]plumer.]
   1. To strip or pluck off the feather of; to deprive of of
      plumage.
      [1913 Webster]

            On the depluming of the pope every bird had his own
            feather.                              --Fuller.
      [1913 Webster]

   2. To lay bare; to expose.
      [1913 Webster]

            The exposure and depluming of the leading humbugs of
            the age.                              --De Quincey.
      [1913 Webster]

WordNet (r) 3.0 (2006):

deplume
    v 1: strip of honors, possessions, or attributes [syn:
         deplume, displume]
    2: strip of feathers; "pull a chicken"; "pluck the capon" [syn:
       pluck, pull, tear, deplume, deplumate, displume]