down (to sth / doing sth)
to make sb make a decision or say clearly what they think or what they intend to do :
It's difficult to pin her down to fixing a date for a meeting.
down (to sth / doing sth)
to make sb make a decision or say clearly what they think or what they intend to do :
It's difficult to pin her down to fixing a date for a meeting.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005