The Collaborative International Dictionary of English v.0.48:

Gild \Gild\ (g[i^]ld), v. t. [imp. & p. p. Gilded or Gilt
   (?); p. pr. & vb. n. Gilding.] [AS. gyldan, from gold gold.
   [root]234. See Gold.]
   1. To overlay with a thin covering of gold; to cover with a
      golden color; to cause to look like gold. "Gilded
      chariots." --Pope.
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            No more the rising sun shall gild the morn. --Pope.
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   2. To make attractive; to adorn; to brighten.
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            Let oft good humor, mild and gay,
            Gild the calm evening of your day.    --Trumbull.
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   3. To give a fair but deceptive outward appearance to; to
      embellish; as, to gild a lie. --Shak.
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   4. To make red with drinking. [Obs.]
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            This grand liquior that hath gilded them. --Shak.
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The Collaborative International Dictionary of English v.0.48:

Gilt \Gilt\, n. [See Geld, v. t.] (Zool.)
   A female pig, when young.
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The Collaborative International Dictionary of English v.0.48:

Gilt \Gilt\,
   imp. & p. p. of Gild.
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The Collaborative International Dictionary of English v.0.48:

Gilt \Gilt\, p. p. & a.
   Gilded; covered with gold; of the color of gold; golden
   yellow. "Gilt hair" --Chaucer.
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The Collaborative International Dictionary of English v.0.48:

Gilt \Gilt\, n.
   1. Gold, or that which resembles gold, laid on the surface of
      a thing; gilding. --Shak.
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   2. Money. [Obs.] "The gilt of France." --Shak. Gilt-edge

WordNet (r) 3.0 (2006):

gilt
    adj 1: having the deep slightly brownish color of gold; "long
           aureate (or golden) hair"; "a gold carpet" [syn:
           aureate, gilded, gilt, gold, golden]
    n 1: a coating of gold or of something that looks like gold
         [syn: gilt, gilding]