spaghetti junction

noun

1. an interchange, usually between motorways, in which there are a large number of underpasses and overpasses and intersecting roads used by a large volume of high-speed traffic

Word History and Origins

Origin of spaghetti junction¹

C20: from the nickname of the Gravelly Hill Interchange, Birmingham, where the M6, A38M, A38, and A5127 intersect