1. a bright flash of light in the sky during a thunderstorm, caused by electricity jumping between clouds or from clouds to the ground

1. very fast or sudden

Examples

• The lightning lit up the entire sky during the storm.
• Thunder follows lightning because sound travels slower than light.
• She was struck by lightning while playing golf.
• The tree was split in half by a lightning bolt.
• He made a lightning decision to accept the job offer.
• The team scored with lightning speed.
• Her lightning reflexes saved her from the accident.