The Collaborative International Dictionary of English v.0.48:

Lavatory \Lav"a*to*ry\, n.; pl. Lavatories. [L. lavatorium:
   cf. lavatoire. See Lave to wash, and cf. Laver.]
   1. A place for washing.
      [1913 Webster]

   2. A basin or other vessel for washing in.
      [1913 Webster]

   3. A wash or lotion for a diseased part.
      [1913 Webster]

   4. A place where gold is obtained by washing.
      [1913 Webster]

   5. A room containing one or more sinks for washing, as well
      as one or more toilet fixtures; also called bathroom,
      toilet, and sometimes commode. Commode and toilet may
      refer to a room with only a toilet fixture, but without a
      sink.

   Syn: toilet, lavatory, can, facility, john, privy, bathroom.
        [WordNet 1.5 +PJC]

The Collaborative International Dictionary of English v.0.48:

Toilet \Toi"let\, n. [F. toilette, dim. of toile cloth. See
   Toil a net.]
   1. A covering of linen, silk, or tapestry, spread over a
      table in a chamber or a dressing room.
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   2. A dressing table. --Pope.
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   3. Act or mode of dressing, or that which is arranged in
      dressing; attire; dress; as, her toilet is perfect.
      [Written also toilette.]
      [1913 Webster]

   Toilet glass, a looking-glass for a toilet table or for a
      dressing room.

   Toilet service, Toilet set, earthenware, glass, and other
      utensils for a dressing room.

   Toilet table, a dressing table; a toilet. See def. 2 above.


   To snake one's toilet, to dress one's self; especially, to
      dress one's self carefully.
      [1913 Webster]

WordNet (r) 3.0 (2006):

toilet
    n 1: a room or building equipped with one or more toilets [syn:
         toilet, lavatory, lav, can, john, privy,
         bathroom]
    2: a plumbing fixture for defecation and urination [syn:
       toilet, can, commode, crapper, pot, potty,
       stool, throne]
    3: misfortune resulting in lost effort or money; "his career was
       in the gutter"; "all that work went down the sewer";
       "pensions are in the toilet" [syn: gutter, sewer,
       toilet]
    4: the act of dressing and preparing yourself; "he made his
       morning toilet and went to breakfast" [syn: toilet,
       toilette]