thunderbolt.

"There is no such thing as what is popularly understood by the term thunderbolt.

Willis the Pilot Paul Adrien

However, the word thunderbolt has survived to us from the days when people still believed that the thing which did the damage during a thunderstorm was really and truly a gigantic white-hot bolt or arrow; and, as there is a natural tendency in human nature to fit an existence to every word, people even now continue to imagine that there must be actually something or other somewhere called a thunderbolt.

Falling in Love With Other Essays on More Exact Branches of Science Grant Allen 1873