lightning has definitions from the fields of physics,electricity
[ noun ] (physics,electricity) abrupt electric discharge from cloud to cloud or from cloud to earth accompanied by the emission of light

Used in print

(Frank Oppenheimer, "Science and Fear-- A Discussion...)

Even in domains where detailed and predictive understanding is still lacking , but where some explanations are possible , as with lightning and weather and earthquakes , the appropriate kind of human_action has been more adequately indicated .

(Louis Zara, Dark Rider....)

Aggie might fly into a closet , shut the door and bury her head in the clothes ; he dared to wait for the lightning .

Lightning could strike you blind if you were a sinner !

Lightning might strike the steeples of the other churches ; not of Drew_Church .

The great spire shone as if the lightning had polished it .

[ noun ] the flash of light that accompanies an electric discharge in the atmosphere (or something resembling such a flash); can scintillate for a second or more