The Collaborative International Dictionary of English v.0.48:

Treasury \Treas"ur*y\, n.; pl. Treasuries. [OE. tresorie, F.
   tr['e]sorerie.]
   1. A place or building in which stores of wealth are
      deposited; especially, a place where public revenues are
      deposited and kept, and where money is disbursed to defray
      the expenses of government; hence, also, the place of
      deposit and disbursement of any collected funds.
      [1913 Webster]

   2. That department of a government which has charge of the
      finances.
      [1913 Webster]

   3. A repository of abundance; a storehouse.
      [1913 Webster]

   4. Hence, a book or work containing much valuable knowledge,
      wisdom, wit, or the like; a thesaurus; as, " Maunder's
      Treasury of Botany."
      [1913 Webster]

   5. A treasure. [Obs.] --Marston.
      [1913 Webster]

   Board of treasury, the board to which is intrusted the
      management of all matters relating to the sovereign's
      civil list or other revenues. [Eng.] --Brande & C.

   Treasury bench, the first row of seats on the right hand of
      the Speaker in the House of Commons; -- so called because
      occupied by the first lord of the treasury and chief
      minister of the crown. [Eng.]

   Treasury lord. See Lord high treasurer of England, under
      Treasurer. [Eng.]

   Treasury note (U. S. Finance), a circulating note or bill
      issued by government authority from the Treasury
      Department, and receivable in payment of dues to the
      government.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Treasury note
    n 1: securities with maturities of 1 to 10 years; sold for cash
         or in exchange for maturing issues or at auction

Moby Thesaurus II by Grady Ward, 1.0:

42 Moby Thesaurus words for "treasury note":
   Federal Reserve note, assignat, bank note, bill,
   callable securities, cats and dogs, certificate of deposit,
   corporation securities, dollar bill, fiat money,
   foreign securities, fractional note, futures contract,
   government note, government securities, junior securities,
   legal-tender note, listed securities, marketable securities,
   municipal securities, national bank note, negotiable note,
   negotiable securities, noncallable securities, note,
   outstanding securities, over-the-counter securities, paper money,
   portfolio, scrip, securities, senior securities, shinplaster,
   short-term note, stocks and bonds, subject to call, treasury bill,
   treasury bond, treasury certificate, undigested securities,
   unregistered securities, warrant