A rock formation scooped out by water erosion.
An area of land from which water drains into a common outlet; drainage basin.
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.
A shallow troughlike depression that's created to carry water during rainstorms or snow melts; a drainage ditch.
A long narrow and shallow trough between ridges on a beach, running parallel to the coastline.
Bioswale, a shallow trough dug into the land on contour (horizontally with no slope), whose purpose is to allow water time to percolate into the soil.
A shallow, usually grassy depression sloping downward from a plains upland meadow or level vegetated ridgetop.
A gutter in a candle.
A low tract of moist or marshy land.