vault
n. countablen. a strong room or a safe used to keep money and valuable things protected. It can also mean a large room under a building, like a church, where people are buried.
n. a secure room or compartment designed for the storage of valuables, typically found in banks; alternatively, an arched underground chamber used for burial or storage.
The bank keeps all the gold bars in a massive steel vault.
The museum stores its most fragile artifacts in a climate-controlled vault deep beneath the main gallery.
Archaeologists discovered a hidden vault beneath the cathedral floor, containing several ornate stone coffins and a collection of religious relics from the fourteenth century.
From Middle English vaute, vowte, from Old French volte (modern voûte), from Vulgar Latin volta < volvita or *volŭta, a regularization of Latin volūta (compare modern volute (“spire”)), the past participle of volvere (“roll, turn”). Cognate with Spanish vuelta (“turn”) and Portuguese volta ("turn"). Doublet of volute.
Borrowed from Middle French volter (“to turn or spin around; to frolic”), borrowed from Italian voltare, itself from a Vulgar Latin frequentative form of Latin volvere; later assimilated to Etymology 1, above.
Often used with 'in' or 'into' to describe the location of stored items.