Related Clues:

• An Olympic swimmer may have a long one
• Piece of sculpture
• Life line?
• Circulatory vessel
• Vital artery
• Principal artery
• Big, bloody tube
• It's headless
• Something close to your heart?
• Big blood carrier
• Middle
• Trunk within a trunk
• Sculpture subject
• Renal artery feeder
• Sculptor's rendering