Eyelid i'-lid: Eyes and eyelids in Hebrew are sometimes used synonymously, as in the parallelism of Proverbs 4:25 (compare 6:4, Proverbs 30:13;):
"Let thine eyes look right on, And let thine eyelids look straight before thee."
(Compare Job 41:18, Psalms 11:4, Jeremiah 9:18.) The alluring power of the wanton woman is conceived of as centered in her eyes (Proverbs 6:25, Isaiah 3:16): "Neither let her take thee with her eyelids." Painting the eyelids was resorted to to intensify the beauty, antimony (which see) being used for darkening the lashes (2 Kings 9:30, Jeremiah 4:30, Ezekiel 23:40).
George B. Eager