Related Clues:

• Trunk in your trunk
• Primary trunk line
• Word with ''burn'' or ''break''
• Bloodline?
• Tin Man's want
• Valentine's Day shape
• Trunk feature
• Shape carved on a tree
• Main blood line
• Biggest artery
• One from the heart?
• "Captain Planet" element
• It carries blood from the left ventricle
• Ticker
• Pump that breaks?