vault /vɔ:lt/ n. ［c］1. 保险库：It was deposited in the vaults of a bank.它存在一家银行的保险库里。2. 地下室，地下墓室：a wine vault酒窖The old patrician was buried in the family vault.这位老贵族埋在家族的墓地里。3. 拱顶：The vault of this cathedral is very high.这座天主教堂的拱顶非常高。