The Collaborative International Dictionary of English v.0.48:

Unveil \Un*veil"\, v. t. [1st pref. un- + veil.]
   To remove a veil from; to divest of a veil; to uncover; to
   disclose to view; to reveal; as, she unveiled her face.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Unveil \Un*veil"\, v. i.
   To remove a veil; to reveal one's self.
   [1913 Webster]

WordNet (r) 3.0 (2006):

unveil
    v 1: remove the veil from; "Women must not unveil themselves in
         public in Islamic societies" [ant: veil]
    2: make visible; "Summer brings out bright clothes"; "He brings
       out the best in her" [syn: uncover, bring out, unveil,
       reveal]
    3: remove the cover from; "unveil a painting"

Moby Thesaurus II by Grady Ward, 1.0:

67 Moby Thesaurus words for "unveil":
   bare, betray, break the seal, bring to light, clear, denudate,
   denude, deobstruct, develop, disclose, discover, dismask, display,
   divest, divulge, draw the veil, expose, fleece, free, impart,
   lay bare, lay open, let daylight in, let out, manifest, open,
   open up, patefy, pluck, raise the curtain, remove, reveal, shear,
   show, show up, strip, strip bare, tell, unblock, uncase, unclench,
   uncloak, unclog, unclothe, unclutch, uncork, uncover, uncurtain,
   undo, undrape, unfold, unfoul, unfurl, unkennel, unlatch, unlock,
   unmask, unpack, unplug, unroll, unscreen, unseal, unsheathe,
   unshroud, unshut, unstop, unwrap