basin

A bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face.

“he ran some water in the basin and splashed it on his face”

The entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet.

“flood control in the Missouri basin”

The quantity that a basin will hold.

“a basinful of water”

A bowl-shaped vessel; usually used for holding food or liquids.

“she mixed the dough in a large basin”

A natural depression in the surface of the land often with a lake at the bottom of it.

“the basin of the Great Salt Lake”