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English definition of “vault”

vault

noun [C] uk   /vɒlt/ us    /vɑːlt/

vault noun [C] (ARCH)

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

vault noun [C] (ROOM)

(UK also vaults) a room, especially in a bank, with thick walls and a strong door, used to store money or valuable things in safe conditions: a bank vault She entered the vault with an armed guard. a room under a church or a small building in a cemetery where dead bodies are buried: She was buried in the family vault.

vault

verb uk   /vɒlt/ us    /vɑːlt/
[I usually + adv/prep, T] to jump over something by first putting your hands on it or by using a pole: He vaulted over the gate. She vaulted the wall and kept running. He has vaulted 6.02 m in indoor competitions this year.
See also
[T] formal to move someone or something suddenly to a much more important position: Last week's changes vaulted the general to the top, over the heads of several of his seniors.
(Definition of vault from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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