An area of land from which water drains into a common outlet; drainage basin.
A rock formation scooped out by water erosion.
A wide bowl for washing, sometimes affixed to a wall.
A depression, natural or artificial, containing water.
To serve as or become a basin.
To shelter or enclose in a basin.
To create a concavity or depression in.
Any structure or land feature which catches and holds water; the collection of such water.
A catchment area, or the people it serves.
To divide into catchment areas.