'Eyelid' definitions:

Definition of 'eyelid'

From: WordNet
noun
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]

Definition of 'Eyelid'

From: GCIDE
  • 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]