Lightning (noun)

A flash of light in the sky caused by the discharge of electricity within a cloud or between a cloud and the ground.

Origin:

Middle english: from old english lightnung, lightening, from the verb lightnen 'to lighten', from lēoht 'light'.

Examples:

1. The sound of thunder followed the lightning bolt.
2. Lightning illuminated the night sky.
3. The lightning was so bright that it temporarily blinded her.
4. The storm brought with it heavy rain and frequent lightning.
5. Many people are afraid of lightning and the potential danger it poses.