catchment basin

1 definition found

catchment basin - WordNet (r) 2.1 (2005) :

  catchment basin
      n 1: 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" [syn: river basin, basin, watershed, drainage basin
           , catchment area, catchment basin, drainage area
           ]