Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “flash”

See all translations

flash

verb uk   /flæʃ/ us  

flash verb (SHINE SUDDENLY)

B2 [I or T] to shine brightly and suddenly, or to make something shine in this way: Stop flashing that light in my eyes! The lightning flashed and distant thunder rolled. You'd better slow down, that car was flashing its lights at you. [I] literary If someone's eyes flash, they look bright because of the anger or excitement the person is feeling.
More examples

flash verb (MOVE FAST)

C2 [I usually + adv/prep] to move very fast: They flashed past/by on a motorcycle.

flash verb (SHOW QUICKLY)

C2 [T] to show something for a short time: He flashed a smile and offered to buy me a drink. [I or T] informal If a man flashes, he shows his sexual organs in public: He came out of the bushes and flashed me.

flash verb (COMMUNICATE)

[T usually + adv/prep] to communicate something quickly, especially using radio or light waves: Within moments of an event happening, the news can be flashed around the world.

flash verb (SUDDEN EXPERIENCE)

[I + adv/prep] If something flashes through/across your mind, you suddenly or quickly think of it: The thought suddenly flashed through my mind that she didn't want to be here.

flash

noun uk   /flæʃ/ us  

flash noun (BRIGHT LIGHT)

B2 [C] a sudden bright light that quickly disappears: a flash of lightning The bomb exploded in a flash of yellow light.

flash noun (SUDDEN EXPERIENCE)

flash noun (PHOTOGRAPHY)

B2 [C or U] the device or system used to produce a bright light for a short time when taking a photograph: Where's the flash for the camera? It's dark in here, I'll have to use the flash.

flash noun (MILITARY SIGN)

[C] UK a small object or piece of material worn on a military uniform as a sign of rank, or (on clothing) a strip or mark of colour different from the main colour

flash noun (QUICK LOOK)

[C] humorous a quick look at something: She leaned over and I caught a flash of pink underwear.

flash

adjective uk   /flæʃ/ UK us  
looking expensive in a way that attracts attention: That's a very flash suit he's wearing.
(Definition of flash from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of flash?
Add Cambridge dictionaries to your browser to your website

Definitions of “flash” in other dictionaries

Word of the Day

baby

a very young child, especially one that has not yet begun to walk or talk

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

stackin’ p

March 30, 2015
idiom slang earning a lot of money ‘That’s a very generous present.”Yeah, well, she’s stackin’ p, innit?’

Read More