funnel cloud


noun
  1. a rapidly rotating funnel-shaped cloud extending downward from the base of a cumulonimbus cloud, which, if it touches the surface of the earth, is a tornado or waterspout.

  • Also called pendant cloud, tornado cloud, tuba.

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British Dictionary definitions for funnel cloud

funnel cloud

noun
  1. a whirling column of cloud extending downwards from the base of a cumulonimbus cloud: part of a waterspout or tornado

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