noun
one of the small groups of people that a large group can be divided into in order to discuss and give their opinions about a particular subject. The information obtained is used by people doing market research .
noun
one of the small groups of people that a large group can be divided into in order to discuss and give their opinions about a particular subject. The information obtained is used by people doing market research .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005