Definition of "vault" []

• An arched structure, usually of masonry or concrete, serving to cover a space. (noun)
• An arched overhead covering, such as the sky, that resembles the architectural structure in form. (noun)
• A room or space, such as a cellar or storeroom, with arched walls and ceiling, especially when underground. (noun)
• A room or compartment, often built of steel, for the safekeeping of valuables: a bank vault. (noun)
• A burial chamber, especially when underground. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "* And please be advised your doomsday seed vault is functioning perfectly."
• "The 1918 manor house, which has nearly 22,000 square feet and features a carriage house, walk-in vault and a koi pond, played a key part in Ms. Helmsley's federal tax-evasion conviction."
• "The K computer aims to once again vault the country to the top of the global supercomputer rankings with a system capable of tackling complex problems related to climate change and weather patterns."