noun
( NAmE , informal ) a subject or issue that people have strong feelings about and argue about a lot :
Race has always been a hot button in this country's history.
the hot-button issue of nuclear waste disposal
noun
( NAmE , informal ) a subject or issue that people have strong feelings about and argue about a lot :
Race has always been a hot button in this country's history.
the hot-button issue of nuclear waste disposal
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005