waterspout

noun

1. Also called rainspout. a pipe running down the side of a house or other building to carry away water from the gutter of the roof.
2. a spout, duct, or the like, from which water is discharged.
3. a funnel-shaped or tubular portion of a cloud over the ocean or other body of water that, laden with mist and spray, resembles a solid column of water reaching upward to the cloud from which it hangs.Compare tornado(def 1).