lavatory

(noun) a room or building equipped with one or more toilets. Synonyms: toilet, lav, can, john, privy, bathroom.

(noun) a bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face. Synonyms: washbasin, basin, washbowl, washstand. Example: "He ran some water in the basin and splashed it on his face."

(noun) a toilet that is cleaned of waste by the flow of water through it. Synonyms: flush toilet.