A lavatory is a room or a vessel used for washing, and it can refer to a bathroom or a restroom. In the context of a bathroom, a lavatory usually refers to a sink or basin with running water and a drainpipe for washing hands and face. In the context of a restroom, a lavatory can refer to a flush toilet or water closet. In some regions, such as the UK, a lavatory can also refer to a toilet or washbasin.