blinking

off-and-on

• “the blinking signal light”

closing the eyes intermittently and rapidly

• “he stood blinking in the bright sunlight”

(used of persons) informal intensifiers

• “what a bally (or blinking) nuisance”
• “a bloody fool”
• “a crashing bore”
• “you flaming idiot”

a reflex that closes and opens the eyes rapidly