the title of the British government minister who is President of the Privy Council (= group of people who advise the king or queen). He or she is also either the Leader of the House of Commons or the Leader of the House of Lords.
LORD PRESIDENT OF THE COUNCIL
Meaning of LORD PRESIDENT OF THE COUNCIL in English
Oxford guide to British and American culture English vocabulary. Руководство по британской и американской культуре, Оксфордский английский словарь. 2005