Bankruptcy is a state of being bankrupt, or having no money to pay back debts that you owe.
When you file for bankruptcy, you are giving up all your possessions and declaring, essentially, that you don't have any money left. During the recession, lots of businesses had to file for bankruptcy or declare by law that they were unable to pay off their debts. The ending of the word bankruptcy is a tricky one. Remember that it ends in tcy.