Definition of ball lightning in English:

ball lightning

Line breaks: ball light|ning

noun

[mass noun]
  • A rare and little known kind of lightning having the form of a moving globe of light several centimetres across which persists for periods of up to a minute.
    More example sentences
    • In nearly all reported cases, the observers saw another form of lightning flash before seeing ball lightning.
    • Some researchers believe that ball lightning occurs when lightning bolts touch down on the Earth's surface.
    • Extremely rare, there are few pictures of ball lightning, which is usually described as a floating sphere, often about the size of a basketball.

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Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody