an average or ordinary person, either male or female :
Politicians often don't understand the views of the man in the street.
THE MAN (AND / OR WOMAN) IN THE STREET
Meaning of THE MAN (AND / OR WOMAN) IN THE STREET in English
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005