1A washbasin; especially a bowl or basin fixed to the wall or mounted on a pedestal or counter, having a water supply and a drain; a sink, typically in a bathroom, intended for washing the hands or face. Compare "lavatory"toilet bowl. Now chiefly North American (chiefly Plumbing in later use).

2The part of a flushing toilet into which the user urinates or defecates, consisting of a large ceramic bowl connected to the water cistern and sewer by plumbing.