lavatory in WordNet English dictionary

1. 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"
   washbasin  basin  washbowl  washstand  lavatory 
   
2. a room or building equipped with one or more toilets
   toilet  lavatory  lav  can  john  privy  bathroom 
   
3. a toilet that is cleaned of waste by the flow of water through it
   flush toilet  lavatory