flicker
n 1: a momentary flash of light [syn: {glint}, {spark}]
2: North American woodpecker
3: the act of moving back and forth [syn: {waver}, {flutter}]
v 1: move back and forth very rapidly, as of a candle [syn: {waver},
{flitter}, {flutter}, {quiver}]
2: shine unsteadily; "The candle flickered" [syn: {flick}]
3: flash intermittently; "The lights flicked on and off" [syn:
{flick}]