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"
furniture consisting of a table or stand to hold a basin and pitcher of water for washing: `wash-hand stand' is a British term
A washstand is a piece of furniture designed to hold a bowl for washing your hands and face in, which was used in former times before washbasins had taps on them. a table in a bedroom, used in the past for holding the things needed for washing your face