Related Clues:

• It's quick with a wink
• Site of many lashes
• Lens cover, of a sort
• Cover for cornea
• Cover of The Observer: 'England to yield erratically'
• Protection for organ of sight
• Lashes' base
• Target for some shadows
• It’s a blinking requirement
• Ocular shutter
• Batting membrane?
• Part of your face that blinks
• During forty winks it's still -- or moving forty times
• Very cold with top off, holding you closer at night?
• Examine cap used by batter?