Slang for one billion currency units. Used particularly in currency trading, e.g. for Japanese yen since on billion yen only equals approximately US$10 million. It is clearer to say, "I'm a buyer of a yard of yen," than to say, "I'm a buyer of a billion yen," which could be misheard as, "I'm a buyer of a million yen."
YARD
Meaning of YARD in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012