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]

Moby Thesaurus II by Grady Ward, 1.0:

129 Moby Thesaurus words for "exposed":
   aerial, aeriform, aery, airish, airlike, airy, alfresco,
   answerable for, apparent, apt to, atmospheric, bald, bare, bared,
   beholdable, belied, bleak, blown, breezy, capable of, clear,
   cleared, confounded, confuted, deflated, denied, denudated,
   denuded, dependent on, detectable, discarded, discernible,
   disclosed, discredited, dismissed, disproved, disputed, divested,
   ethereal, evident, exploded, exposed to, exposed to view, free,
   hanging out, impugned, in danger of, in evidence, in full view,
   in plain sight, in view, incident to, insight, invalidated,
   laid bare, liable, liable to, light, likely, likely to, manifest,
   naked, naked to, negated, negatived, nonimmune, noticeable,
   obliged to, obnoxious, observable, open, open as day, open to,
   open to all, open to view, open-air, outcropping, overt,
   overthrown, overturned, peeled, perceivable, perceptible,
   pneumatic, prone, prone to, punctured, raw, ready for,
   recognizable, refuted, rejected, responsible for, revealed, roomy,
   seeable, sensitive, showing, shown up, standing to, stripped,
   subject, subject to, susceptible, susceptive to, threatened,
   to be seen, tropospheric, unclassified, unclogged, unclosed,
   unclouded, unconcealed, uncovered, undisguised, unhidden,
   unobstructed, unrestricted, unstopped, unveiled, upset, viewable,
   visible, visual, wide-open, windblown, windswept, within range of,
   witnessable