a large bank of earth along the border between England and Wales. It was built in the 8th century by Offa, a king of Mercia , as a protection against the Britons who lived to the west of it. Later, it became the border between the two countries. Today people enjoy walking along it, or parts of it.
OFFA’S DYKE
Meaning of OFFA’S DYKE in English
Oxford guide to British and American culture English vocabulary. Руководство по британской и американской культуре, Оксфордский английский словарь. 2005