Definitions
1.NounA whirlwind that forms over water, not associated with a mesocyclone of a thunderstorm (contrary to a true tornado).
2.NounA true tornado that passes over a body of water.
3.NounA plume of water rising from the surface of a body of water as the result of an explosion or impact.
4.NounA channel through which water is discharged, especially from the gutters of a roof; downspout; drainpipe.