1. [n]  any of several small Old World finches
2. [n]  a moderate yellow with a greenish tinge
3. [n]  (informal) a female singer
4. [n]  someone acting as an informer or decoy for the police
5. [adj]  having the color of a canary; a light to moderate yellow

Canary
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1. \Ca*na"ry\, a. [F. Canarie, L. Canaria insula one of the
   Canary islands, said to be so called from its large dogs, fr.
   canis dog.]
   1. Of or pertaining to the Canary Islands; as, canary wine;
      canary birds.
   2. Of a pale yellowish color; as, Canary stone.
   {Canary grass}, a grass of the genus {Phalaris} ({P.
      Canariensis}), producing the seed used as food for canary
      birds.
   {Canary stone} (Min.), a yellow species of carnelian, named
      from its resemblance in color to the plumage of the canary
      bird.
   {Canary wood}, the beautiful wood of the trees {Persea
      Indica} and {P. Canariensis}, natives of Madeira and the
      Canary Islands.
   {Canary vine}. See {Canary bird flower}, under {Canary bird}.
   

2. \Ca*na"ry\, n.; pl. {Canaries}.
   1. Wine made in the Canary Islands; sack. ``A cup of
      canary.'' --Shak.
   2. A canary bird.
   3. A pale yellow color, like that of a canary bird.
   4. A quick and lively dance. [Obs.]
            Make you dance canary With sprightly fire and
            motion.                               --Shak.
   

3. \Ca*na"ry\, v. i.
   To perform the canary dance; to move nimbly; to caper. [Obs.]
         But to jig of a tune at the tongue's end, canary to it
         with your feet.                          --Shak.