lightning

/ˈlaɪt.nɪŋ/
noun
  1. 1

    A 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. 2

    A discharge of this kind.

    That tree was hit by lightning.

  3. 3

    Anything that moves very fast.

  4. 4

    The act of making bright, or the state of being made bright; enlightenment; brightening, as of the mental powers.

verb
  1. 1

    To produce lightning.

adjective
  1. 1

    Extremely fast or sudden; moving (as if) at the speed of lightning.

Source: https://en.wiktionary.org/wiki/lightning