1. (noun)toilet, lavatory, lav, can, john, privy, bathroom a room or building equipped with one or more toilets
2. (noun)washbasin, basin, washbowl, washstand, lavatory a bathroomsink that is permanently installed and connected to a watersupply and drainpipe; where you can wash your hands and face "he ran some water in the basin and splashed it on his face"
3. (noun)flush toilet, lavatory a toilet that is cleaned of waste by the flow of water through it