WordNet sense 1 (a very short time (as the time it takes the eye blink or the heart to beat)):

flash, heartbeat, instant, jiffy, trice, twinkling, blink of an eye, New York minute, split second

WordNet sense 2 (gleam or glow intermittently):

blink, twinkle, winkle

WordNet sense 3 (a reflex that closes and opens the eyes rapidly):

blinking, nictation, nictitation, winking, eye blink

WordNet sense 4 (force to go away by blinking):

blink away

WordNet sense 5 (briefly shut the eyes):

nictate, nictitate