Related Clues:

• Bore
• BFGoodrich item
• 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
• Go downhill, in a way
• Lose tautness
• Ebb
• Sink in the middle