Fort Knox

English Etymology Named after Henry Knox, the Continental Army Continental Army's chief of artillery during the American Revolution and the first United States Secretary of War. Proper noun Fort Knox A United States Army base located in Kentucky, United States. The United States Bullion Depository, a vault where gold reserves are stored. Derived terms en solid as Fort Knox all the gold in Fort Knox Noun ? Fort Knox en figurative A place which is very difficult to access or enter. en After the security upgrades, the facility was essentially Fort Knox. Usage notes The proper noun is commonly used in similes; for example, en as safe as Fort Knox. en Gold en eponyms