Related Clues:

• Trash-can topper
• Stopper or topper
• Pupil's hidden behind this
• Top swimming-pool left unfinished
• Cover most of open-air pool
• Top hat
• Cover for the cup
• Top crust of pie
• It's used in blinking
• Blinking membrane
• One winks with it
• It gives you a blinkered outlook on life
• Where stye may occur
• Skin for blinking
• Top cover