up
1.
to make sth separate into smaller pieces; to divide sth into smaller parts :
The ship was broken up for scrap metal.
Sentences can be broken up into clauses.
2.
to end a relationship, a company, etc. :
They decided to break up the partnership.
—related noun break-up
3.
to make people leave sth or stop doing sth, especially by using force :
Police were called in to break up the fight.