1. （使）分裂；（被）拆分；(使）破碎
When something breaks up or when you break it up, it separates or is divided into several smaller parts.
2. （恋人）分手；（夫妻）结束关系
If you break up with your boyfriend, girlfriend, husband, or wife, your relationship with that person ends.
3. （婚姻关系）破裂；结束（婚姻关系）
If a marriage breaks up or if someone breaks it up, the marriage ends and the partners separate.
4. 散（会）；（使）解散
When a meeting or gathering breaks up or when someone breaks it up, it is brought to an end and the people involved in it leave.
5. （学校或学生）放假
When a school or the pupils in it break up, the school term ends and the pupils start their holidays.
6. （因信号受到干扰）声音断断续续
If you say that someone is breaking up when you are speaking to them on a mobile telephone, you mean that you can only hear parts of what they are saying because the signal is interrupted.
7. 使（某人）失控
If something breaks someone up, it causes them to lose control and begin to laugh or cry.
8. see also: break-up
1. laugh unrestrainedly
Synonym: crack up
2. separate (substances) into constituent elements or parts
Synonym: decomposebreak down
3. cause to separate
e.g. break up kidney stones
disperse particles
4. break or cause to break into pieces
e.g. The plate fragmented
Synonym: fragmentfragmentizefragmentise
5. come to an end
e.g. Their marriage dissolved
The tobacco monopoly broke up
Synonym: dissolve
6. bring the association of to an end or cause to break up
e.g. The decree officially dissolved the marriage
the judge dissolved the tobacco company
Synonym: dissolve
7. close at the end of a session
e.g. The court adjourned
8. cause to go into a solution
e.g. The recipe says that we should dissolve a cup of sugar in two cups of water
9. make a break in
e.g. We interrupt the program for the following messages
Synonym: interruptdisruptcut off
10. release ice
e.g. The icebergs and glaciers calve
Synonym: calve
11. attack with or as if with a pickaxe of ice or rocky ground, for example
e.g. Pick open the ice
Synonym: pick
12. set or keep apart
e.g. sever a relationship
Synonym: sever
13. break violently or noisily
smash
Synonym: crashbreak apart
14. destroy the completeness of a set of related items
e.g. The book dealer would not break the set
Synonym: break
15. take apart into its constituent pieces
Synonym: disassembledismantletake apartbreak apart
16. suffer a nervous breakdown
Synonym: crack upcrackcrock upcollapse
17. come apart
e.g. the group broke up
18. to cause to separate and go in different directions
e.g. She waved her hand and scattered the crowds
Synonym: dispersedissipatedispelscatter
19. discontinue an association or relation
go different ways
e.g. The business partners broke over a tax question
The couple separated after 25 years of marriage
My friend and I split up