Meaning of “flash” - Learner’s Dictionary


verb uk us /flæʃ/
SHINE [ I, T ]

B2 to shine brightly and suddenly, or to make something shine in this way:

The doctor flashed a light into my eye.
Lightning flashed across the sky.
APPEAR [ I, T ] (also flash up)

to appear for a short time, or to make something appear for a short time:

An icon flashed up on the screen.
flash by/past/through, etc

to move somewhere fast:

The motorcycle flashed past us and around the corner.
flash (sb) a look/smile, etc

to look/smile, etc at someone quickly:

She flashed him a smile as he came in.

(Definition of “flash verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)