bust up

Short definition from Wiktionary

Verb

1. 1
   To physically damage or ruin; to be ruined; to go bankrupt; to end (something).
2. 2
   To break up (end a relationship).
3. 3
   To shoot (someone).
4. 4
   To express sudden and intense emotions; to burst into loud laughter.
5. 5
   To spend money wildly, especially on alcoholic drinks.

Noun

1. 1
   An angry argument.