a British association for professional magicians (= people who entertain others with magic tricks) established in 1905. Only the best magicians can join, and members are not allowed to reveal their secrets to the public.
MAGIC CIRCLE
Meaning of MAGIC CIRCLE in English
Oxford guide to British and American culture English vocabulary. Руководство по британской и американской культуре, Оксфордский английский словарь. 2005