The Collaborative International Dictionary of English v.0.48:

Cabin \Cab"in\ (k[a^]b"[i^]n), n. [OF. caban, fr. W. caban
   booth, cabin, dim. of cab cot, tent; or fr. F. cabane,
   cabine, LL. cabanna, perh. from the Celtic.]
   1. A cottage or small house; a hut. --Swift.
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            A hunting cabin in the west.          --E. Everett.
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   2. A small room; an inclosed place.
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            So long in secret cabin there he held
            Her captive.                          --Spenser.
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   3. A room in ship for officers or passengers.
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   Cabin boy, a boy whose duty is to wait on the officers and
      passengers in the cabin of a ship.
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WordNet (r) 3.0 (2006):

cabin boy
    n 1: a young man acting as a servant on a ship

Moby Thesaurus II by Grady Ward, 1.0:

58 Moby Thesaurus words for "cabin boy":
   Ganymede, Hebe, airline hostess, airline stewardess, attendant,
   bakehead, batman, bellboy, bellhop, bellman, black gang, boilerman,
   bootblack, boots, bungs, caddie, chips, chore boy,
   commissary steward, complement, copyboy, cupbearer, deckhand,
   deckie, errand boy, errand girl, fireman, footboy, gofer,
   gun loader, gunner, hand, hospital steward, hostess,
   landing signalman, mail orderly, navigator, office boy,
   office girl, oiler, orderly, page, purser, radio operator,
   roustabout, snip, snips, sparks, squire, steward, stewardess,
   stoker, tender, torpedoman, trainbearer, usher, watch, yeoman