fort knox

noun fort knox

• coffer — A coffer is a large strong chest used for storing valuable objects such as money or gold and silver.
• bank — A bank is a building where a bank offers its services.
• strongbox — a strongly made, lockable box or chest for safeguarding valuable possessions, as money, jewels, or documents.
• safe — secure from liability to harm, injury, danger, or risk: a safe place.
• cache — A cache is a quantity of things such as weapons that have been hidden.