What is the meaning of flash?

noun

• A sudden intense burst of radiant energy.
• A momentary brightness.
• A short vivid experience.
  • usage: "a flash of emotion swept over him"; "the flashings of pain were a warning"
  • synonyms: flashing
• A sudden brilliant understanding.
  • usage: "he had a flash of intuition"
• A very short time (as the time it takes the eye to blink or the heart to beat. )
  • usage: "if I had the chance I'd do it in a flash"
  • synonyms: blink of an eye, heartbeat, instant, jiffy, split second, trice, twinkling, wink, New York minute
• A gaudy outward display.
  • synonyms: ostentation, fanfare
• A burst of light used to communicate or illuminate.
  • synonyms: flare
• A short news announcement concerning some on-going news story.
  • synonyms: news bulletin, newsflash, newsbreak
• A bright patch of color used for decoration or identification.
  • usage: "red flashes adorned the airplane"; "a flash sewn on his sleeve indicated the unit he belonged to"
• A lamp for providing momentary light to take a photograph.
  • synonyms: photoflash, flash lamp, flashgun, flashbulb, flash bulb

verb

• Gleam or glow intermittently.
  • usage: "The lights were flashing"
  • synonyms: blink, wink, twinkle, winkle
• Appear briefly.
  • usage: "The headlines flashed on the screen"
• Display proudly; act ostentatiously or pretentiously.
  • usage: "he showed off his new sports car"
  • synonyms: flaunt, show off, ostentate, swank
• Make known or cause to appear with great speed.
  • usage: "The latest intelligence is flashed to all command posts"
• Run or move very quickly or hastily.
  • usage: "She dashed into the yard"
  • synonyms: dart, dash, scoot, scud, shoot
• Expose or show briefly.
  • usage: "he flashed a $100 bill"
• Protect by covering with a thin sheet of metal.
  • usage: "flash the roof"
• Emit a brief burst of light.
  • usage: "A shooting star flashed and was gone"

adjective

• Tastelessly showy.
  • usage: "a flash car"; "a flashy ring"; "garish colors"; "a gaudy costume"; "loud sport shirts"; "a meretricious yet stylish book"; "tawdry ornaments"
  • synonyms: brassy, cheap, flashy, garish, gaudy, gimcrack, loud, meretricious, tacky, tatty, tawdry, trashy