A treasury bill is a short-term bond that is issued by the United States government in order to raise money.
[US]
The Japanese routinely purchase more than a third of U.S. Treasury Bills.
Treasury bill in British English
noun
a short-term noninterest-bearing obligation issued by the Treasury, payable to bearer and maturing usually in three months, within which it is tradable on a discount basis on the open market
treasury bill in American English
US
a short-term obligation of the U.S. Treasury, maturing in one year or less, bearing no interest and sold periodically on the open market on a discount basis