Source : Webster's Revised Unabridged Dictionary (1913)

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.

            A hunting cabin in the west.          --E. Everett.

   2. A small room; an inclosed place.

            So long in secret cabin there he held Her captive.
                                                  --Spenser.

   3. A room in ship for officers or passengers.

   {Cabin boy}, a boy whose duty is to wait on the officers and
      passengers in the cabin of a ship.

Source : WordNet®

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