flicker

intransitive verb

1. to flap the wings rapidly, as in hovering; flutter: said of a bird
2. to move with a quick, light, wavering motion
3. to burn or shine unsteadily, as a candle in the wind

transitive verb

noun

1. an act or instance of flickering
2. a dart of flame or light, as in a flickering fire
3. a look or feeling that comes and goes quickly: a flicker of fear crossed his face
4. any of various visual effects, as a fluctuation in brightness on a video screen or in the clarity of the image being projected on a film screen

noun