What does "flicker" mean?

Flicker: To waver unsteadily, like a flame in a current of air, or when about to expire; as, the flickering light. The shadows flicker to fro. Tennyson.

Additional senses

  1. 2.The act of wavering or of fluttering; flucuation; sudden and brief increase of brightness; as, the last flicker of the dying flame.
  2. 3.(Zoöl.) The golden-winged woodpecker (Colaptes aurutus); -- so called from its spring note. Called also yellow-hammer, high-holder, pigeon woodpecker, and yucca. The cackle of the flicker among the oaks. Thoureau.

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