A basin is a broad word that usually means either a bowl-shaped container or a bowl-shaped area of land.

Basic meaning

  • In everyday use, a basin is a round or oval container with sloping sides that holds water or other liquids, often used for washing or cooking.
  • The word can also mean the amount of liquid that such a container holds, as in “a basin of water.”

Geography meaning

  • In geography, a basin is a low-lying area of land, often shaped like a shallow bowl.
  • A river basin is all the land where rain and streams drain into the same main river, like the Amazon Basin.

Water and harbors

  • A basin can be an enclosed or partly enclosed area of water, such as a dock or sheltered harbor area where boats can stay, sometimes called a yacht basin.
  • There are also special types like tidal basins , which fill and empty with the tide.

Geology meaning

  • In geology, a basin is a large region where rock layers dip toward the center, forming a structural or sedimentary bowl that can fill with sediments or water.
  • Large oceanic basins are huge depressions in Earth’s surface that are occupied by the oceans.

TL;DR: A basin is a bowl-shaped container or a bowl-shaped low area, whether it is a sink in a bathroom, the land drained by a river, or a large geological hollow.