Glossary A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 1 | 3 | 4 | 5 Definitions by InvestorWords.com   What is...? Treasury Bill A negotiable debt obligation issued by the U.S. government and backed by its full faith and credit, having a maturity of one year or less. Exempt from state and local taxes. also called Bill or T-Bill or U.S. Treasury Bill. see also adjustable rate mortgage, adjustable rate preferred stock, cash equivalents, cash reserves, equity risk premium, floating-rate bond, Government paper, monetary indicator, money market, near money, repo, risk-free return, Treasuries, Treasury auction. Copyright ©2009 by InvestorGuide.com. All Rights Reserved.