noun
1.
the ending of a relationship or an association :
the break-up of their marriage
family break-ups
2.
the division of a large organization or country into smaller parts
noun
1.
the ending of a relationship or an association :
the break-up of their marriage
family break-ups
2.
the division of a large organization or country into smaller parts
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005