blink

From Wiktionary

Verb[change]

A blinking clock.
  1. If you blink, you close your eyes for a very short time.
    The sun shone in her eyes and she blinked a few times.
    She turned her back and blinked away her tears.
  2. If something is blinking, it is turning on and off quickly.
    A light was blinking on his phone.