washbasin n 1: a bathroom or lavatory sink that is permanently installed and connected to a water supply and drainpipe; where you wash your hands and face; "he ran some water in the basin and splashed it on his face" [syn: {basin}, {washbowl}, {washstand}, {lavatory}] 2: a basin for washing the hands (`wash-hand basin' is a British expression) [syn: {handbasin}, {washbowl}, {lavabo}, {wash-hand basin}]