plural of lightning bug

(US, informal) Applejack.

plural of lightning rod

A relatively rare form of cloud-to-ground lightning which appears to break up into a string of short, bright sections, and lasts longer than the usual discharge channel.

(idiomatic) Incredibly fast.

plural of upward lightning

(astronomy, meteorology) An upper-atmospheric optical phenomenon associated with thunderstorms, in which the lightning bolt projects straight into the upper atmosphere.

A round of a game or contest that gives participants a fixed time in which to achieve as much as possible.

plural of lightning round

(idiomatic) A difficult or challenging feat, particularly to attempt such a feat. / (idiomatic) Great, unlikely, fleeting success, particularly entrepreneurial or in the media.