Consolidated Mortgage Bond
  
Hewlett Packard owns some 8 billion dollars worth of real estate. They bought it in the 1950s in Silicon Valley for like...18 cents. And now it's worth...bank.
So if HP wanted to pledge that land as collateral to raise a bunch of cash, it could. The form of that cash raised would come from a consolidated mortgage bond, i.e. it would consolidate its real estate holdings into one entity and then borrow against them.