A hesitation or pause.
A desire to temporarily protect or isolate yourself, perhaps due to overwhelm or threat.
A brief moment, or the idea of something happening quickly.
A fresh start, wiping off, or cleaning out (since a blink clears and restores the surface of the eye).
A blinking light can represent importance, urgency, or warning; safety or visibility; a means of creating orderliness or controlling a flow (as in a blinking traffic light).
See also: Eye; Reflective Light; Sparkle; Cleaning; Sign