The Collaborative International Dictionary of English v.0.48:

Bath \Bath\ (b[.a]th; 61), n.; pl. Baths (b[.a][th]z). [AS.
   b[ae][eth]; akin to OS. & Icel. ba[eth], Sw., Dan., D., & G.
   bad, and perh. to G. b[aum]hen to foment.]
   1. The act of exposing the body, or part of the body, for
      purposes of cleanliness, comfort, health, etc., to water,
      vapor, hot air, or the like; as, a cold or a hot bath; a
      medicated bath; a steam bath; a hip bath.
      [1913 Webster]

   2. Water or other liquid for bathing.
      [1913 Webster]

   3. A receptacle or place where persons may immerse or wash
      their bodies in water.
      [1913 Webster]

   4. A building containing an apartment or a series of
      apartments arranged for bathing.
      [1913 Webster]

            Among the ancients, the public baths were of amazing
            extent and magnificence.              --Gwilt.
      [1913 Webster]

   5. (Chem.) A medium, as heated sand, ashes, steam, hot air,
      through which heat is applied to a body.
      [1913 Webster]

   6. (Photog.) A solution in which plates or prints are
      immersed; also, the receptacle holding the solution.
      [1913 Webster]

   Note: Bath is used adjectively or in combination, in an
         obvious sense of or for baths or bathing; as, bathroom,
         bath tub, bath keeper.
         [1913 Webster]

   Douche bath. See Douche.

   Order of the Bath, a high order of British knighthood,
      composed of three classes, viz., knights grand cross,
      knights commanders, and knights companions, abbreviated
      thus: G. C. B., K. C. B., K. B.

   Russian bath, a kind of vapor bath which consists in a
      prolonged exposure of the body to the influence of the
      steam of water, followed by washings and shampooings.

   Turkish bath, a kind of bath in which a profuse
      perspiration is produced by hot air, after which the body
      is washed and shampooed.

   Bath house, a house used for the purpose of bathing; --
      also a small house, near a bathing place, where a bather
      undresses and dresses.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

39 Moby Thesaurus words for "baths":
   bagnio, balneae, balneum, bath, bathhouse, bathroom, caldarium,
   casino, club, clubhouse, gambling house, gathering place, hangout,
   haunt, health resort, hot spring, lavatory, meeting place, mikvah,
   mineral spring, public baths, pump house, pump room, purlieu,
   rallying point, resort, rest room, sauna, spa, springs,
   stamping ground, steam room, sudarium, sudatorium, sweat room,
   tepidarium, thermae, washroom, watering place



Easton's 1897 Bible Dictionary:

Baths
   The use of the bath was very frequent among the Hebrews (Lev.
   14:8; Num. 19:19, ect.). The high priest at his inauguration
   (Lev. 8:6), and on the day of atonement, was required to bathe
   himself (16:4, 24). The "pools" mentioned in Neh. 3:15, 16, 2
   Kings 20:20, Isa. 22:11, John 9:7, were public bathing-places.