Related Clues:

• Major blood supplier
• Pump outlet?
• Tangled mass
• Arterial vessel
• Natural pump outlet
• Half hitch or granny
• Main line of a sort
• Vital line
• Prepare a necktie
• Heart's main line
• Granny or square follower
• Gordius' poser
• Big vessel
• Group of toads, e.g.
• Feeder of some organs