(~s)
If you say that someone is a ~ in an organization, campaign, or community, you mean that they are one of the most important, active, enthusiastic, and successful people in it.
N-COUNT
(~s)
If you say that someone is a ~ in an organization, campaign, or community, you mean that they are one of the most important, active, enthusiastic, and successful people in it.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012