eye·lid 
/ˈaɪˌlɪd/ noun
plural eye·lids /ˈaɪˌlɪd/ noun [count] : either one of the two movable pieces of skin that cover your eye when it is closed
▪ the upper/lower eyelid of the left eye — see picture at eye
▪ the upper/lower eyelid of the left eye — see picture at eye
not bat an eyelid — see 4bat
