The Collaborative International Dictionary of English v.0.48:

Snapper \Snap"per\, n.
   1. One who, or that which, snaps; as, a snapper up of
      trifles; the snapper of a whip.
      [1913 Webster]

   2. (Zool.) Any one of several species of large sparoid food
      fishes of the genus Lutjanus, abundant on the southern
      coasts of the United States and on both coasts of tropical
      America.
      [1913 Webster]

   Note: The red snapper (Lutjanus aya syn. Lutjanus
         Blackfordi) and the gray, or mangrove, snapper
         (Lutjanus griseus) are large and abundant species.
         The name is loosely applied to various other fishes, as
         the bluefish, the rosefish, the red grouper, etc. See
         Rosefish.
         [1913 Webster]

   3. (Zool.) A snapping turtle; as, the alligator snapper.
      [1913 Webster]

   4. (Zool.) The green woodpecker, or yaffle.
      [1913 Webster]

   5. (Zool.) A snap beetle.
      [1913 Webster]

   6. (Teleg.) A device with a flexible metal tongue for
      producing clicks like those of the sounder.
      [Webster 1913 Suppl.]

   7. A string bean. [Colloq., U. S.]
      [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Rosefish \Rose"fish`\, n. (Zool.)
   A large marine scorpaenoid food fish (Sebastes marinus)
   found on the northern coasts of Europe and America. called
   also red perch, hemdurgan, Norway haddok, and also,
   erroneously, snapper, bream, and bergylt.
   [1913 Webster]

   Note: When full grown it is usually bright rose-red or
         orange-red; the young are usually mottled with red and
         ducky brown.
         [1913 Webster]

WordNet (r) 3.0 (2006):

snapper
    n 1: (football) the person who plays center on the line of
         scrimmage and snaps the ball to the quarterback; "the
         center fumbled the handoff" [syn: center, snapper]
    2: flesh of any of various important food fishes of warm seas
    3: a party favor consisting of a paper roll (usually containing
       candy or a small favor) that pops when pulled at both ends
       [syn: cracker, snapper, cracker bonbon]
    4: Australian food fish having a pinkish body with blue spots
       [syn: snapper, Chrysophrys auratus]
    5: any of several large sharp-toothed marine food and sport
       fishes of the family Lutjanidae of mainly tropical coastal
       waters
    6: large-headed turtle with powerful hooked jaws found in or
       near water; prone to bite [syn: common snapping turtle,
       snapper, Chelydra serpentina]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "snapper":
   Klaxon, blunder, boiler factory, boiler room, bull-roarer, bumble,
   catcall, cherry bomb, clack, clacker, clapper, cracker, cricket,
   firecracker, horn, lurch, noisemaker, rattle, rattlebox, siren,
   steam whistle, ticktack, whistle, whizgig, whizzer