From Longman Dictionary of Contemporary EnglishTreasury billˈTreasury ˌbill (also T-bill infml) noun an American government bond. Treasury bills are sold to raise money for the government and usually bought by large financial institutions around the world. → see also gilt-edgedFrom Longman Business DictionaryTreasury billˈTreasury bill (also T-bill), government billFINANCE a form of borrowing for short periods of time by a governmentThree-month Treasury bills now yield less than 4%.an auction of short-term US government bills → bill