Learner's definition of TREASURY
1 : the place where the money of a government, club, etc., is kept
also : the money itself
A government official has been accused of stealing from the nation's treasury.
The fees are deposited into the state's treasury.
How much (money) is in the club's treasury?
2 : a place in a church, castle, palace, etc., where money and valuable objects are kept 3 : a group of valuable things that are related in some way — used especially in the titles of books
: the government department that is in charge of handling a country's money — often used as Treasury before another noun
— called also the Treasury Department