The Collaborative International Dictionary of English v.0.48:

Expose \Ex*pose"\, v. t. [imp. & p. p. Exposed; p. pr. & vb.
   n. Exposing.] [F. exposer; pref. ex- (L. ex out)+poser to
   place. See Pose, v. t.]
   1. To set forth; to set out to public view; to exhibit; to
      show; to display; as, to expose goods for sale; to expose
      pictures to public inspection.
      [1913 Webster]

            Those who seek truth only, freely expose their
            principles to the test, and are pleased to have them
            examined.                             --Locke.
      [1913 Webster]

   2. To lay bare; to lay open to attack, danger, or anything
      objectionable; to render accessible to anything which may
      affect, especially detrimentally; to make liable; as, to
      expose one's self to the heat of the sun, or to cold,
      insult, danger, or ridicule; to expose an army to
      destruction or defeat.
      [1913 Webster]

            Expose thyself to feel what wretches feel. --Shak.
      [1913 Webster]

   3. To deprive of concealment; to discover; to lay open to
      public inspection, or bring to public notice, as a thing
      that shuns publicity, something criminal, shameful, or the
      like; as, to expose the faults of a neighbor.
      [1913 Webster]

            You only expose the follies of men, without
            arraigning their vices.               --Dryden.
      [1913 Webster]

   4. To disclose the faults or reprehensible practices of; to
      lay open to general condemnation or contempt by making
      public the character or arts of; as, to expose a cheat,
      liar, or hypocrite.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

exposed \exposed\ adj.
   1. with no protection or shield; as, the exposed northeast
      frontier.

   Syn: open.
        [WordNet 1.5]

   2. visible due to absence of clothing at that point; -- of
      body parts.

   Syn: uncovered, bare.
        [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

exposed
    adj 1: with no protection or shield; "the exposed northeast
           frontier"; "open to the weather"; "an open wound" [syn:
           exposed, open]
    2: not covered with clothing; "her exposed breast" [syn:
       exposed, uncovered]