BE LIKE / AS SAFE AS FORT KNOX


Meaning of BE LIKE / AS SAFE AS FORT KNOX in English

( of a building ) to be strongly built, often with many locks, strong doors, guards, etc., so that it is difficult for people to enter and the things kept there are safe :

This home of yours is like Fort Knox.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.