noun
1.
a place (as a room or building) where valuables are kept
priceless gold candlesticks kept in the treasury of the cathedral
Synonyms: treasure-house
Related Word: archive(s), gallery, museum; depository, repository, storehouse
Idioms: treasure room
2.
the place of deposit, retention, and disbursement of collected funds
the union treasury held emergency strike funds
Synonyms: chest, coffer, exchequer, war chest
Related Word: depositary, depository
3.
Synonyms: bonanza , eldorado, Golconda, gold mine, mine, treasure-house, treasure trove