flicker

Short definition from Wiktionary

Noun

1. 1
   An unsteady flash of light.
2. 2
   A short moment.
3. 3
   Any of certain small woodpeckers, especially of the genus Colaptes.
4. 4
   One who flicks.

Verb

1. 1
   To burn or shine unsteadily, or with a wavering light.
2. 2
   To keep going on and off; to appear and disappear for short moments; to flutter.
3. 3
   To flutter or flap.

Proper noun

1. 1
   A surname.