ETYM Latin coruscatio: cf. French coruscattion.
1. A sudden flash or play of light.
2. A flash of intellectual brilliancy.

ETYM For lightening, from lighten to flash.
1. Emission of light due to electricity discharging from cloud to cloud or from cloud to earth.
2. 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.
High-voltage electrical discharge between two charged rainclouds or between a cloud and the Earth, caused by the buildup of electrical charges. Air in the path of lightning ionizes (becomes conducting), and expands; the accompanying noise is heard as thunder. Currents of 20,000 amperes and temperatures of 30,000şC/54,000şF are common. + prikaži više

Shining intermittently with a sparkling light

1. To appear briefly.
2. To emit a brief burst of light.
3. To expose or show briefly.
4. To gleam or glow intermittently; SYN. blink, wink, twinkle, winkle.
5. To make known or cause to appear with great speed.
6. To protect by covering with a thin sheet of metal, as of parts of roofs.