The Collaborative International Dictionary of English v.0.48:

Sailor \Sail"or\, n.
   One who follows the business of navigating ships or other
   vessels; one who understands the practical management of
   ships; one of the crew of a vessel; a mariner; a common
   seaman.
   [1913 Webster]

   Syn: Mariner; seaman; seafarer.
        [1913 Webster]

   Sailor's choice. (Zool.)
   (a) An excellent marine food fish (Diplodus rhomboides,
       syn. Lagodon rhomboides) of the Southern United States;
       -- called also porgy, squirrel fish, yellowtail,
       and salt-water bream.
   (b) A species of grunt (Orthopristis chrysopterus syn.
       Pomadasys chrysopterus), an excellent food fish common
       on the southern coasts of the United States; -- called
       also hogfish, and pigfish.
       [1913 Webster]

WordNet (r) 3.0 (2006):

sailor
    n 1: any member of a ship's crew [syn: sailor, crewman]
    2: a serviceman in the navy [syn: bluejacket, navy man,
       sailor, sailor boy]
    3: a stiff hat made of straw with a flat crown [syn: boater,
       leghorn, Panama, Panama hat, sailor, skimmer,
       straw hat]

Moby Thesaurus II by Grady Ward, 1.0:

96 Moby Thesaurus words for "sailor":
   AB, Ancient Mariner, Argonaut, Dylan, Flying Dutchman, Neptune, OD,
   Poseidon, Varuna, able seaman, able-bodied seaman, adventurer,
   alpinist, astronaut, bluejacket, boatman, buccaneer, camper,
   captain, climber, comers and goers, commuter, cosmopolite, cruiser,
   deep-sea man, excursionist, explorer, fair-weather sailor, fare,
   fisherman, globe-girdler, globe-trotter, gob, goer, hajji, hearty,
   jack, jack afloat, jack-tar, jacky, jet set, jet-setter, journeyer,
   limey, lobsterman, mariner, matelot, mountaineer, navigator,
   old salt, palmer, passenger, passerby, pathfinder, pilgrim,
   pioneer, pirate, privateer, rubberneck, rubbernecker, salt,
   sea dog, sea rover, seafarer, seafaring man, seaman, shellback,
   shipman, sightseer, skipper, straphanger, swab, swabbie, tar,
   tarpaulin, tourer, tourist, trailblazer, trailbreaker, transient,
   traveler, trekker, tripper, viator, viking, visiting fireman,
   voortrekker, voyager, voyageur, water dog, wayfarer, whaler,
   windjammer, windsailor, world-traveler, yachtsman