Dictionary definition · flash
noun
- a sudden intense burst of radiant energy
- a momentary brightness
- a short vivid experience"a flash of emotion swept over him"
- a sudden brilliant understanding"he had a flash of intuition"
- a very short time (as the time it takes the eye to blink or the heart to beat)"if I had the chance, I'd do it in a flash"
- a gaudy outward display
verb
- gleam or glow intermittently"The lights were flashing"
- appear briefly"The headlines flashed on the screen"
- display proudly; act ostentatiously or pretentiously"he showed off his new sports car"
- make known or cause to appear with great speed"The latest intelligence is flashed to all command posts"
- run or move very quickly or hastily"She dashed into the yard"
adjective
- tastelessly showy"a flash car"
Source: Open English WordNet (CC BY 4.0).