basin (Noun) — A bowl-shaped vessel; usually used for holding food or liquids. ex. "she mixed the dough in a large basin"
basin (Noun) — The quantity that a basin will hold. ex. "a basin of water"
basin (Noun) — A natural depression in the surface of the land often with a lake at the bottom of it. ex. "the basin of the Great Salt Lake"
basin (Noun) — The entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet. ex. "flood control in the Missouri basin"
basin (Noun) — A bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face. ex. "he ran some water in the basin and splashed it on his face"