Blink

Augenblick

(the time needed to close and reopen one's eyes)

Blinzeln

(closing both eyes and opening them again)

Blinzeln

(a view with eyes partly closed)

Lidschlag

(closing both eyes and opening them again)

Wimpernschlag

(the time needed to close and reopen one's eyes)

flüchtiger Blick

(a quick view)

aufblenden

(to flash headlights)

blinken

(to send a signal with a lighting device)

blinken

(to flash on and off at regular intervals)

blinzeln

(to close and reopen both eyes quickly)

lichthupen

(to flash headlights)

mit den Fingern schnippen

(hyperbole: to perform the smallest action)

mit der Wimper zucken

(hyperbole: to perform the smallest action)

morsen

(to send a signal with a lighting device)