flicker - definition and synonyms

noun [countable] 

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  1. 1
    a light that goes quickly on and off, or that becomes brighter and then less bright

    The flicker of a candle flame caught our eyes.

  2. 2
    mainly literary an experience of an emotion that is weak, or that lasts a very short time

    They both saw the flicker of annoyance on the prince’s face.