coastal elitenoun [ C, + sing/pl verb ]
uk/ˌkəʊ.stəl eˈliːt//ˌkoʊ.stəl iˈliːt/the group of educated, professional people living mainly in cities on the western or northeastern coasts of the US who have liberal political views and are often considered to have advantages that most ordinary Americans do not have:
He criticized America's coastal elites for disregarding mainstream values.