The Collaborative International Dictionary of English v.0.48:

Windjammer \Wind"jam`mer\, n.
   1. (Naut.) A sailing vessel or one of its crew; -- orig. so
      called contemptuously by sailors on steam vessels.
      [Colloq.]
      [Webster 1913 Suppl.]

   2. An army bugler or trumpeter; any performer on a wind
      instrument. [Slang]
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

windjammer
    n 1: a large sailing ship

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "windjammer":
   AB, Ancient Mariner, Argonaut, Captain Bobadil, Dylan,
   Flying Dutchman, Gascon, Neptune, OD, Poseidon, Texan, Varuna,
   able seaman, able-bodied seaman, agreeable rattle, babbler,
   big mouth, big talker, blab, blabberer, blatherer, blower,
   blowhard, bluejacket, blusterer, boaster, brag, braggadocio,
   braggart, buccaneer, chatterbox, chatterer, deep-sea man,
   fair-weather sailor, fanfaron, fisherman, gabber, gabbler, galley,
   gasbag, gasconader, gibble-gabbler, great talker, hearty, hector,
   hot-air artist, idle chatterer, jabberer, jack, jack afloat,
   jack-tar, jacky, jay, limey, lobsterman, magpie, mariner, matelot,
   miles gloriosus, moulin a paroles, navigator, patterer, pirate,
   prater, prattler, privateer, rattle, sail, sailboat, sailing boat,
   sailing cruiser, sailing ship, sailing vessel, sailor, salt,
   sea dog, sea rover, seafarer, seafaring man, seaman, shipman,
   tall ship, tar, viking, water dog, whaler, windbag, windboat,
   windsailor, windship, windy, word-slinger