eyelid(n = noun.body) lid, palpebra - either of two folds of skin that can be moved to cover or open the eye; "his lids would stay open no longer"
is a kind of protective fold
is a part of eye, oculus, optic
has parts: cilium, eyelash, lash, conjunctiva
The cover of the eye; that portion of movable skin with which an animal covers or uncovers the eyeball at pleasure. [1913 Webster]
eyelid, n. the upper or lower fold of skin closing to cover the eye.