Definitions
1.nounA flash of light produced by short-duration, high-voltage discharge of electricity within a cloud, between clouds, or between a cloud and the earth."Although we did not see the lightning, we did hear the thunder."
2.nounA discharge of this kind."That tree was hit by lightning."
3.nounAnything that moves very fast.
4.nounThe act of making bright, or the state of being made bright; enlightenment; brightening, as of the mental powers.
5.verbTo produce lightning.
6.adjectiveExtremely fast or sudden; moving (as if) at the speed of lightning.