Related Clues:

• One may become bald
• Weary
• It may need air
• Grow weary
• The fifth is spare
• Hang loosely
• It can wear down from too much travel
• Get jaded
• Knock out
• It's carried in a trunk
• Problem encountered in the middle ages?
• Show the effects of weight
• Start to give out
• Run out of gas
• Succumb to gravity