Vault
/vˈɔlt/
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Definition
(noun) An arched masonry structure supporting and forming a ceiling, whether freestanding or forming part of a larger building.
Sentence Examples
He was allegedly seduced by her into giving the key to the vault.
Dan broke into the vault and stole millions of dollars.
CEFR Practice Quiz
The bank keeps its most valuable items in a secure ____ that is protected by several advanced security systems today.