noun (n)

• a bowl-shaped vessel; usually used for holding food or liquids(noun.artifact)

  Example:
  She mixed the dough in a large basin.
  

  source: wordnet30
• the quantity that a basin will hold(noun.quantity)

  Example:
  A basinful of water.
  

  Synonym:
  basinful
  

  source: wordnet30
• a natural depression in the surface of the land often with a lake at the bottom of it(noun.object)

  Example:
  The basin of the Great Salt Lake.
  

  source: wordnet30
• the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet(noun.location)

  Example:
  Flood control in the Missouri basin.
  

  Synonym:
  catchment area, catchment basin, drainage area, drainage basin, river basin, watershed
  

  source: wordnet30
• a bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face(noun.artifact)

  Example:
  He ran some water in the basin and splashed it on his face.
  

  Synonym:
  lavatory, washbasin, washbowl, washstand
  

  source: wordnet30
• A hollow vessel or dish, to hold water for washing, and for various other uses.(noun)

  source: webster1913