Nouns

(n)flasha sudden intense burst of radiant energy
(n)flasha momentary brightness
(n)flash, flashinga short vivid experience“a flash of emotion swept over him”, “the flashings of pain were a warning”
(n)flasha sudden brilliant understanding“he had a flash of intuition”
(n)blink of an eye, flash, heartbeat, instant, jiffy, split second, trice, twinkling, wink, New York minutea 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”
(n)ostentation, fanfare, flasha gaudy outward display
(n)flare, flasha burst of light used to communicate or illuminate
(n)news bulletin, newsflash, flash, newsbreaka short news announcement concerning some on-going news story
(n)flasha bright patch of color used for decoration or identification“red flashes adorned the airplane”, “a flash sewn on his sleeve indicated the unit he belonged to”
(n)flash, photoflash, flash lamp, flashgun, flashbulb, flash bulba lamp for providing momentary light to take a photograph

Verbs

(v)flash, blink, wink, twinkle, winklegleam or glow intermittently“The lights were flashing”
(v)flashappear briefly“The headlines flashed on the screen”
(v)flaunt, flash, show off, ostentate, swankdisplay proudly; act ostentatiously or pretentiously“he showed off his new sports car”
(v)flashmake known or cause to appear with great speed“The latest intelligence is flashed to all command posts”
(v)dart, dash, scoot, scud, flash, shootrun or move very quickly or hastily“She dashed into the yard”
(v)flashexpose or show briefly“he flashed a $100 bill”
(v)flashprotect by covering with a thin sheet of metal“flash the roof”
(v)flashemit a brief burst of light“A shooting star flashed and was gone”

Adjectives

(s)brassy, cheap, flash, flashy, garish, gaudy, gimcrack, loud, meretricious, tacky, tatty, tawdry, trashytastelessly showy“a flash car”, “a flashy ring”, “garish colors”, “a gaudy costume”, “loud sport shirts”, “a meretricious yet stylish book”, “tawdry ornaments”