The Collaborative International Dictionary of English v.0.48:

Washstand \Wash"stand`\, n.
   A piece of furniture holding the ewer or pitcher, basin, and
   other requisites for washing the person.
   [1913 Webster]

WordNet (r) 3.0 (2006):

washstand
    n 1: furniture consisting of a table or stand to hold a basin
         and pitcher of water for washing: `wash-hand stand' is a
         British term [syn: washstand, wash-hand stand]
    2: a bathroom sink that is permanently installed and connected
       to a water supply and drainpipe; where you can wash your
       hands and face; "he ran some water in the basin and splashed
       it on his face" [syn: washbasin, basin, washbowl,
       washstand, lavatory]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "washstand":
   aquamanile, automatic dishwasher, basin, bath, bathtub, bidet,
   dishpan, dishwasher, ewer, finger bowl, kitchen sink, lavabo,
   lavatory, piscina, shower, shower bath, shower curtain,
   shower head, shower room, shower stall, showers, sink, tub,
   wash barrel, wash boiler, washbasin, washbowl, washdish, washer,
   washing machine, washing pot, washpot, washtub