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English definition of “flash”

flash

verb
 
 
/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.Emitting and casting light
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.Appearing and disappearing
flash by/past/through, etc to move somewhere fast: The motorcycle flashed past us and around the corner.Moving quickly
flash (sb) a look/smile, etc to look/smile, etc at someone quickly: She flashed him a smile as he came in.Using the eyesEyesight, glasses and lensesThe eye and surrounding areaPerceptiveLaughing and smiling
(Definition of flash verb from the Cambridge Learners Dictionary © Cambridge University Press)
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