a situation or subject that is likely to make sb angry, or that involves risk :
We'd be on dangerous ground if we asked about race or religion.
a situation or subject that is likely to make sb angry, or that involves risk :
We'd be on dangerous ground if we asked about race or religion.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005