off
1.
to separate sth, using force :
She broke off a piece of chocolate and gave it to me.
2.
to end sth suddenly :
Britain threatened to break off diplomatic relations.
They've broken off their engagement.
off
1.
to separate sth, using force :
She broke off a piece of chocolate and gave it to me.
2.
to end sth suddenly :
Britain threatened to break off diplomatic relations.
They've broken off their engagement.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005