basin in WordNet English dictionary

1. a bowl-shaped vessel; usually used for holding food or liquids
   "she mixed the dough in a large basin"
   basin 
   
2. 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"
   washbasin  basin  washbowl  washstand  lavatory 
   
3. 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"
   river basin  basin  watershed  drainage basin  catchment area  catchment basin  drainage area 
   
4. 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"
   basin 
   
5. the quantity that a basin will hold
   "a basinful of water"
   basin  basinful