Related Clues:

• Shuteye shutter
• Eye cover
• Pot's top
• Something flipped
• Playing-card spot
• Elbow hard
• Spill guard
• Nasty shock
• It's flipped when you flip
• It may be flipped
• Spot on a die
• Pop-top, for one
• Supercaffeinated cola
• Container cover
• Spot on a domino