The Collaborative International Dictionary of English v.0.48:

Bathe \Bathe\ (b[=a][th]), v. t. [imp. & p. p. Bathed
   (b[=a][th]d); p. pr. & vb. n. Bathing.] [OE. ba[eth]ien,
   AS. ba[eth]ian, fr. b[ae][eth] bath. See 1st Bath, and cf.
   Bay to bathe.]
   1. To wash by immersion, as in a bath; to subject to a bath.
      [1913 Webster]

            Chancing to bathe himself in the River Cydnus.
                                                  --South.
      [1913 Webster]

   2. To lave; to wet. "The lake which bathed the foot of the
      Alban mountain." --T. Arnold.
      [1913 Webster]

   3. To moisten or suffuse with a liquid.
      [1913 Webster]

            And let us bathe our hands in C[ae]sar's blood.
                                                  --Shak.
      [1913 Webster]

   4. To apply water or some liquid medicament to; as, to bathe
      the eye with warm water or with sea water; to bathe one's
      forehead with camphor.
      [1913 Webster]

   5. To surround, or envelop, as water surrounds a person
      immersed. "The rosy shadows bathe me. " --Tennyson. "The
      bright sunshine bathing all the world." --Longfellow.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bathing \Bath"ing\, n.
   Act of taking a bath or baths.
   [1913 Webster]

   Bathing machine, a small room on wheels, to be driven into
      the water, for the convenience of bathers, who undress and
      dress therein.
      [1913 Webster]

WordNet (r) 3.0 (2006):

bathing
    n 1: immersing the body in water or sunshine
    2: the act of washing yourself (or another person) [syn:
       washup, bathing]