Treasury bill
noun[C]
FINANCE,GOVERNMENT(alsotreasury bill)ukus(alsoT-bill)aformofborrowingby anationalgovernment,especiallythe USgovernment, for aperiodoftimeof less than oneyearon whichinterestispaidat the end of theborrowingperiod:
The 91-daytreasurybillratethisyearwillaverage8.5%, up from 5.5% lastyear.