To flutter; to flap the wings without flying.
- To move waveringly; flutter: shadows flickering on the wall.
- To burn unsteadily or fitfully.
- To cause to move waveringly.
- A brief movement; a tremor.
- An inconstant or wavering light.
- A brief or slight sensation: a flicker of doubt.
- Slang A movie.
- Any of various large North American woodpeckers of the genus Colaptes, especially C. auratus, the common flicker, having a brown back, spotted breast, and white rump.