Related Clues:

• Give in to gravity
• It may be worn after traveling
• It may be belted
• Sign of aging
• Spare item
• Kind of iron
• Part of the landing gear
• Take a breather
• React to gravity
• Lose tautness
• Sink in the middle
• Become weary
• Lose tautness, in a way
• Yield to gravity
• Makeshift tree swing