|a. a tornado occurring over water that forms a column of water and mist extending between the surface and the clouds above|
|b. a sudden downpour of heavy rain|
|2.||a pipe or channel through which water is discharged, esp one used for drainage from the gutters of a roof|
a small-diameter column of rapidly swirling air in contact with a water surface. Waterspouts are almost always produced by a swiftly growing cumulus cloud. They may assume many shapes and often occur in a series, called a waterspout family, produced by the same upward-moving air current. Waterspouts are closely related to other atmospheric phenomena such as tornadoes, whirlwinds, and fire storms.
Learn more about waterspout with a free trial on Britannica.com.