1. a sudden bright light that appears and disappears quickly
2. a very brief moment

1. to shine brightly for a very short time
2. to show something quickly
3. to move very quickly

1. happening very quickly or suddenly

Examples

• Lightning created a bright flash in the sky.
• The camera flash was too bright for the photo.
• In a flash, the cat disappeared under the bed.
• The diamond ring flashed in the sunlight.
• She flashed her ID card to the security guard.
• The red car flashed past us on the highway.
• We need a flash decision on this matter.
• The flash flood caught everyone by surprise.