Related Clues:

• Parts of some pins
• Akron production
• Wears down
• Succumbs to gravity
• Yields to pressure
• Jolly Roger and Union Jack, e.g.
• Loses color
• Rolling stock?
• Loses solidity
• Loses buoyancy
• Hangs down
• Low rollers
• Gets pooped
• Loses rigidity
• Isn't straight in the middle