Source : Webster's Revised Unabridged Dictionary (1913)

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.

   2. That department of a government which has charge of the
      finances.

   3. A repository of abundance; a storehouse.

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

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

   {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.

Source : WordNet®

treasury
     n 1: the funds of a government or institution or individual [syn:
           {exchequer}]
     2: the government department responsible for collecting and
        managing and spending public revenues
     3: the British cabinet minister responsible for economic
        strategy [syn: {First Lord of the Treasury}]
     4: the federal department that collects revenue and administers
        federal finances; the Treasury Department was created in
        1789 [syn: {Department of the Treasury}, {Treasury
        Department}, {United States Treasury}]
     5: a depository (a room or building) where wealth and precious
        objects can be kept safely