a series of roads that join together and pass through many areas of North London. They join the South Circular at the Thames , east and west of London. Until the M25 was built the North Circular formed the main road round London. It still carries a lot of traffic, which often moves very slowly.
NORTH CIRCULAR
Meaning of NORTH CIRCULAR in English
Oxford guide to British and American culture English vocabulary. Руководство по британской и американской культуре, Оксфордский английский словарь. 2005