flash
The word 'flash' in Spanish has the same meaning as in English. It refers to a sudden brief burst of bright light or a short sudden display, appearance, or experience. It can also refer to a device used in photography to give a sudden, brief burst of bright light for taking pictures in less than ideal light conditions.
The camera of my phone has a very powerful flash.
This sentence is stating that the flash on the speaker's phone camera is very powerful, indicating it can provide a lot of light when taking pictures.
When the lightning struck, it looked like a flash of light.
The speaker is describing a lightning strike and comparing it to a flash of light as a metaphor, highlighting the bright, sudden nature of both phenomena.
We are going to do this process in a flash.
This sentence means the speaker plans to carry out a certain process very quickly, using 'in a flash' as an idiomatic expression to imply speed and efficiency.