You use ~ to emphasize that something is of one particular type, or intended for one particular thing or person, rather than any other.
This session was ~ for the boys.
= purely
ADV: ADV group emphasis
You use ~ to emphasize that something is of one particular type, or intended for one particular thing or person, rather than any other.
This session was ~ for the boys.
= purely
ADV: ADV group emphasis
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012