Related Clues:

• It may go flat
• Theater reservation
• See 64 Across
• Tucker out
• Ticket datum
• Influential one, informally
• Unicycle need
• Ride a bike
• It may eventually become bald
• Straphanger's lack
• Run out of energy
• By the ___ of one's pants
• Revolver
• Chair or stool
• Foot lever