eyelid n 1: either of two folds of skin that can be moved to cover or open the eye; "his lids would stay open no longer" [syn: {eyelid}, {lid}, {palpebra}]
Eyelid \Eye`lid"\, n. (Anat.) The cover of the eye; that portion of movable skin with which an animal covers or uncovers the eyeball at pleasure. [1913 Webster]