The Collaborative International Dictionary of English v.0.48:

Crest \Crest\, v. t. [imp. & p. p. Crested; p. pr. & vb. n.
   Cresting.]
   1. To furnish with, or surmount as, a crest; to serve as a
      crest for.
      [1913 Webster]

            His legs bestrid the ocean, his reared arm
            Crested the world.                    --Shak.
      [1913 Webster]

            Mid groves of clouds that crest the mountain's brow.
                                                  --Wordsworth.
      [1913 Webster]

   2. To mark with lines or streaks, like, or regarded as like,
      waving plumes.
      [1913 Webster]

            Like as the shining sky in summer's night, . . .
            Is crested with lines of fiery light. --Spenser.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Crested \Crest"ed\ (kr[e^]st"[e^]d), a.
   1. Having a crest.
      [1913 Webster]

            But laced crested helm.               --Dryden.
      [1913 Webster]

   2. (Zool.) Having a crest of feathers or hair upon the head.
      "The crested bird." --Dryden.
      [1913 Webster]

   3. (Bott.) Bearing any elevated appendage like a crest, as an
      elevated line or ridge, or a tuft. --Gray.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

decorated \decorated\ adj.
   having decorations. [Narrower terms: beaded, beady,
   bejeweled, bejewelled, bespangled, gemmed, jeweled, jewelled,
   sequined, spangled, spangly; bedaubed; bespectacled,
   monocled, spectacled; braided; brocaded, embossed,
   raised; buttony; carbuncled; champleve, cloisonne,
   enameled; crested, plumed having a decorative plume);
   crested, top-knotted, topknotted, tufted; crested;
   embellished, ornamented, ornate; embroidered; encircled,
   ringed, wreathed; fancied up, gussied, gussied up, tricked
   out; feathery, feathered, plumy; frilled, frilly,
   ruffled; fringed; gilt-edged; inflamed; inlaid;
   inwrought; laced; mosaic, tessellated; paneled,
   wainscoted; studded; tapestried; tasseled, tasselled;
   tufted; clinquant, tinseled, tinselly; tricked-out]
   Also See: clothed, fancy. Antonym: unadorned.

   Syn: adorned.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

crested
    adj 1: bearing an heraldic device
    2: (of a bird or animal) having a usually ornamental tuft or
       process on the head; often used in combination; "golden
       crested"; "crested iris"; "crested oriole"; "tufted duck";
       "tufted loosestrife" [syn: crested, topknotted, tufted]
    3: (of a knight's helmet) having a decorative plume [syn:
       crested, plumed]