flicker
/ˈflɪkə/
noun
Meaning
An unsteady flash of light.
"the flicker of a poorly tuned television set"
A short moment.
verb
Meaning
To burn or shine unsteadily, or with a wavering light.
To keep going on and off; to appear and disappear for short moments; to flutter.
To flutter; to flap the wings without flying.