noun
a person who cannot be given secret information because they are a danger to a particular country, organization, etc., especially because of their political beliefs
noun
a person who cannot be given secret information because they are a danger to a particular country, organization, etc., especially because of their political beliefs
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005