Nouns

(n)blink of an eye, flash, heartbeat, instant, jiffy, split second, trice, twinkling, wink, New York minutea very short time (as the time it takes the eye to blink or the heart to beat)“if I had the chance, I'd do it in a flash”
(n)winkclosing one eye quickly as a signal
(n)blink, eye blink, blinking, wink, winking, nictitation, nictationa reflex that closes and opens the eyes rapidly

Verbs

(v)winksignal by winking“She winked at him”
(v)flash, blink, wink, twinkle, winklegleam or glow intermittently“The lights were flashing”
(v)blink, wink, nictitate, nictatebriefly shut the eyes“The TV announcer never seems to blink”
(v)wink, blink, blink awaykeep back by blinking“blink away tears”