artery
noun
[ ˈɑːtəri ]
• any of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body.
• an important route in a system of roads, rivers, or railway lines.
• "George Street, main artery of Edinburgh's Golden Mile"
Similar:
main/trunk route,
main/trunk road,
main/trunk line,
high road,
highway,
Origin:
late Middle English: from Latin arteria, from Greek artēria, probably from airein ‘raise’.