eye-winker

Eye-winker is a charming old American colloquial term for an eyelash. Dated and mostly out of use today, it was the kind of folksy, playful expression that turned up in children's rhymes and casual conversation in earlier centuries. The logic is pretty clear: eyelashes flutter and 'wink' over the eye. You might still encounter it in old-timey literature or if your grandparent grew up somewhere deeply rural, but it's firmly in the vintage drawer of American English.