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flash

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verb flash pronunciation in American English /flæʃ/
Word Forms
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present tense
I/you/we/theyflash
he/she/itflashes
present participleflashing
past tenseflashed
past participleflashed
  1. 1
    [intransitive] to shine brightly for a very short time, or to shine on and off very quickly
    Thunder roared and lightning flashed.
    His watch flashed in the sunlight.
    flashing neon signs
    Synonyms and related words
    1. a.
      [transitive] to switch a bright light on, or on and off, especially as a signal
      A truck drove close behind me and flashed its headlights.
  2. 2
    [intransitive] to appear for a very short time and then quickly disappear
    flash across/by/on/past: The faces of Hollywood’s most glamorous stars flashed across the screen.
    1. a.
      [transitive] to communicate something very quickly and for a short time, for example a message, image, or look
      flash something across/on/to something: They flashed weather warnings on the screen.
      Our nerves flash messages to the brain.
      flash someone something: Ted flashed me a huge grin and looked away.
    2. b.
      [intransitive] if a thought flashes across your mind, it comes and goes very quickly
      flash across/through/into: The thought that I might die flashed through my mind.
      Synonyms and related words
  3. 3
    [intransitive] to pass very quickly
    Traffic flashed past us in the other lane.
    The week seemed to flash by.
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