Related Clues:

• I heard Cork perhaps is part of one of those natural cover-ups
• This will provide cover for the viewer
• Naturally it is cover for the pupil
• Cover for viewer
• To which one is lashed?
• It's closing leaves pupil in the dark
• Skin over viewer
• Drop it in a wink
• Priest accesses stain, lifting cover of organ
• Protection for the viewer
• Vision protector?
• Seedily fashionable seafront's disappearing -- it's closed some of the time
• Muscular fold below the forehead
• Raised in crocodile? Yes, a fold of skin
• Facial lens cover