The Collaborative International Dictionary of English v.0.48:

Veil \Veil\, v. t. [imp. & p. p. Veiled; p. pr. & vb. n.
   Veiling.] [Cf. OF. veler, F. voiler, L. velarc. See Veil,
   n.] [Written also vail.]
   [1913 Webster]
   1. To throw a veil over; to cover with a veil.
      [1913 Webster]

            Her face was veiled; yet to my fancied sight,
            Love, sweetness, goodness, in her person shined.
                                                  --Milton.
      [1913 Webster]

   2. Fig.: To invest; to cover; to hide; to conceal.
      [1913 Webster]

            To keep your great pretenses veiled.  --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Veiled \Veiled\, a.
   Covered by, or as by, a veil; hidden. "Words used to convey a
   veiled meaning." --Earle.
   [1913 Webster]

WordNet (r) 3.0 (2006):

veiled
    adj 1: having or as if having a veil or concealing cover; "a
           veiled dancer"; "a veiled hat"; "veiled threats"; "veiled
           insults" [ant: unveiled]
    2: muted or unclear; "veiled sounds"; "the image is veiled or
       foggy"

Moby Thesaurus II by Grady Ward, 1.0:

118 Moby Thesaurus words for "veiled":
   aleatoric, aleatory, amorphous, armored, between the lines, blobby,
   blurred, blurry, broad, cased, ceiled, chance, chancy, chaotic,
   cloaked, clouded, coated, concealed, confused, coped, covered,
   covert, cowled, cryptic, curtained, delitescent, disguised,
   disordered, dormant, eclipsed, encapsulated, encapsuled, encased,
   enveloped, enwrapped, esoteric, filmed, floored, foggy, fuzzy,
   general, hazy, hibernating, hidden, hit-or-miss, hooded, housed,
   ill-defined, imprecise, inaccurate, inchoate, incoherent,
   indecisive, indefinable, indefinite, indeterminable, indeterminate,
   indistinct, inexact, latent, lax, loose, loricate, loricated,
   lurking, mantled, masked, muffled, mystic, nonspecific, obfuscated,
   obscure, obscured, occult, occulted, orderless, packaged, paved,
   possible, potential, random, roofed-in, screened, scummed, secret,
   shaded, shadowed forth, shadowy, shady, shapeless, sheathed,
   shelled, shielded, shrouded, sleeping, stochastic, sub rosa,
   submerged, subtle, swathed, sweeping, tented, unclear, undefined,
   under cover, under the surface, underlying, undestined,
   undetermined, unmanifested, unplain, unrevealed, unspecified,
   vague, virtual, walled, walled-in, wrapped