wink

a 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"

closing one eye quickly as a signal

a reflex that closes and opens the eyes rapidly

signal by winking; "She winked at him"

gleam or glow intermittently; "The lights were flashing"

briefly shut the eyes; "The TV announcer never seems to blink"

force to go away by blinking; "blink away tears"