Related Clues:

• Pain in the peeper
• It may be covered in shadow
• It moves in a blink
• A cyclops has only one
• It can be covered by a shadow
• It may be batted
• Something most fish lack
• Shadow location
• One involved in batting
• Pupil's cover?
• Cornea coverer
• Winker's apparatus
• Flirtatious flutterer
• It may be closed for the night
• Drop it and you cannot see