vault - definition in the American English Dictionary - Cambridge Dictionaries Online

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vault

noun [C]  us   /vɔlt/

vault noun [C] (ARCH)

a type of arch that supports a roof or ceiling, esp. in a church or public building, or a ceiling or roof supported by several of these arches

vault noun [C] (ROOM)

a room, esp. in or under the ground floor of a large building, that is used to store things safely: The museum keeps many of its treasures in temperature-controlled storage vaults. In a bank, a vault is where money, jewelry, important documents, etc., are locked for protection.

vault

verb [I/T]  us   /vɔlt/

vault verb [I/T] (JUMP)

to jump over something: [I/T] He vaulted (over) the gate. To vault is also to move someone suddenly to a much higher or more important position: [T] The speech vaulted him into the national spotlight.
(Definition of vault from the Cambridge Academic Content Dictionary © Cambridge University Press)
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