Yard is a term used for Billion. 1 Yard USD, means 1 Billion USD.
The term was used to avoid confusion with similar sounding amounts, such as million and billion. Also it was used to avoid confusion in the metric system with the word milliard.
In modern times you don't hear the word so often when you don't have to shout out in a trading pit or over the phone. You just make sure it has to right amount of zeros when you type it in on the computer.