Merriam-Webster Collegiate Dictionary - treasury

 noun  (plural -suries)  Etymology: Middle English tresorie, from Anglo-French, from tresor treasure  Date: 14th century  1.  a. a place in which stores of wealth are kept  b. the place of deposit and disbursement of collected funds; especially one where public revenues are deposited, kept, and disbursed  c. funds kept in such a depository  2. obsolete treasure  3. capitalized  a. a governmental department in charge of finances and especially the collection, management, and expenditure of public revenues  b. the building in which the business of such a governmental department is transacted  4. capitalized a government security (as a note or bill) issued by the Treasury  5. a repository for treasures a ~ of poems