To flutter, as a bird; vibrate the wings rapidly.To fluctuate or waver, as the light of a torch in the wind; undergo rapid and irregular changes.To scintillate; sparkle.To act lovingly; bestow caresses.Synonyms Glimmer, Gleam, etc. See glare, intransitive verbWavering; unsteady.n. The act of flickering or fluttering; a wavering or fluctuating gleam, as of a candle; a flutter.n. The popular name of the golden-winged woodpecker, Colaptes auratus, a very common and handsome woodpecker of the United States, and of other species of the same genus, as the Mexican or red-shafted flicker, C. mexicanus, or the gilded flicker, C. chrysoides.n. Specifically, in psychology, an unstable visual perception, occasioned by the intermittence or intensive fluctuation of stimuli.