eyelid(redirected from eyelid inversion)
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Related to eyelid inversion: eyelid eversion
1. either of the two muscular folds of skin that can be moved to cover the exposed portion of the eyeball
2. Aeronautics a set of movable parts at the rear of a jet engine that redirect the exhaust flow to assist braking during landing
A movable, protective section of skin that covers and uncovers the eyeball of many terrestrial animals.