noun
a rule or moral principle that is unfair because it is used in one situation, but not in another, or because it treats one group of people in a way that is different from the treatment of another
noun
a rule or moral principle that is unfair because it is used in one situation, but not in another, or because it treats one group of people in a way that is different from the treatment of another
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005