Lavatory /(?)/

1. Washing, or cleansing by washing.

pl. Lavatories

1. A place for washing.
2. A basin or other vessel for washing in.
3. A wash or lotion for a diseased part.
4. A place where gold is obtained by washing.
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.