Related Clues:

• Open center in a structure
• Major blood supplier
• Pump outlet?
• Arterial vessel
• Natural pump outlet
• Main line of a sort
• Vital line
• Heart's main line
• Public room brightener
• Big vessel
• Feeder of some organs
• The way to one's heart?
• Vital body tube
• Trunk full of blood
• Ventricle neighbor