The Collaborative International Dictionary of English v.0.48:

Canary \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.
      [1913 Webster]

   2. Of a pale yellowish color; as, Canary stone.
      [1913 Webster]

   Canary grass, a grass of the genus Phalaris (Phalaris
      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 Persea Canariensis, natives of Madeira and
      the Canary Islands.

   Canary vine. See Canary bird flower, under Canary bird.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Canary \Ca*na"ry\, n.; pl. Canaries.
   1. Wine made in the Canary Islands; sack. "A cup of canary."
      --Shak.
      [1913 Webster]

   2. A canary bird.
      [1913 Webster]

   3. A pale yellow color, like that of a canary bird.
      [1913 Webster]

   4. A quick and lively dance. [Obs.]
      [1913 Webster]

            Make you dance canary
            With sprightly fire and motion.       --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Canary \Ca*na"ry\, v. i.
   To perform the canary dance; to move nimbly; to caper. [Obs.]
   [1913 Webster]

         But to jig of a tune at the tongue's end, canary to it
         with your feet.                          --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

canary
    adj 1: having the color of a canary; of a light to moderate
           yellow [syn: canary, canary-yellow]
    n 1: someone acting as an informer or decoy for the police [syn:
         fink, snitch, snitcher, stoolpigeon, stool
         pigeon, stoolie, sneak, sneaker, canary]
    2: a female singer
    3: a moderate yellow with a greenish tinge [syn: canary
       yellow, canary]
    4: any of several small Old World finches [syn: canary,
       canary bird]

Moby Thesaurus II by Grady Ward, 1.0:

114 Moby Thesaurus words for "canary":
   Heldentenor, Meistersinger, Philomel, alto, aria singer, aureate,
   auric, baritenor, baritone, bass, basso, basso buffo,
   basso cantante, basso profundo, beige, betrayer, blues singer,
   buff, buff-yellow, bulbul, canary-yellow, cantatrice, cantor,
   caroler, chanter, chantress, citron, citron-yellow,
   coloratura soprano, comic bass, contralto, countertenor, cream,
   creamy, crooner, cuckoo, deep bass, diva, dramatic soprano, ecru,
   fallow, feathered songster, flaxen, gilded, gilt, gold,
   gold-colored, golden, heroic tenor, hymner, improvisator, lark,
   lead singer, lemon, lemon-yellow, lieder singer, luteolous,
   lutescent, mavis, melodist, mezzo-soprano, mockingbird, nark,
   nightingale, ocherish, ocherous, ochery, ochreous, ochroid,
   ochrous, ochry, opera singer, or, oriole, prima donna, primrose,
   primrose-colored, primrose-yellow, psalm singer, ringdove,
   rock-and-roll singer, saffron, saffron-colored, saffron-yellow,
   sallow, sand-colored, sandy, singer, singing bird, singstress,
   snitch, song sparrow, songbird, songster, songstress, soprano,
   squealer, stool pigeon, stoolie, straw, straw-colored, tenor,
   thrush, tipster, torch singer, vocalist, vocalizer, voice, warbler,
   xanthic, xanthous, yellow, yellowish, yodeler