noun / verb
blink
BLINK/blɪŋk/
To close and reopen the eyes rapidly.
She blinks by briefly closing and reopening her eyes.

Etymology
Its origin is uncertain, though Middle Dutch blinken, “to glitter,” is one proposed source. Early eye-motion senses emphasized glancing; later usage centered on winking and momentary eye closure.
In context
follow when I blink blink your eyes open blink open close open close open