Definitions of treasury:

• noun:   a depository (a room or building) where wealth and precious objects can be kept safely
• noun:   the government department responsible for collecting and managing and spending public revenues
• noun:   the British cabinet minister responsible for economic strategy
• noun:   the funds of a government or institution or individual
• noun:   the federal department that collects revenue and administers federal finances; the Treasury Department was created in 1789