Waterspout n. : A remarkable meteorological phenomenon, of the nature of a tornado or whirlwind, usually observed over the sea, but sometimes over the land.

Example:


Taxonomy
waterspouts, winter waterspout, 06-21, tornadic, cloud, life cycle, weather, tornadoes, vortex, the Great Lakes, water surface, threat, free encyclopedia, over water, counterparts, Szilagyi, noaa, dark spot.

Defination from the web:
waterspout is an intense columnar vortex (usually appearing as a funnel-shaped cloud) that occurs over a body of water and is ... Water Spout Hit Helicopter". The Telegraph. http://www.telegraph.co.uk/news/uknews/1438173/Water-spout-hit-helicopter.html. Retrieved 2009-06-21. ...