Floor vault

From Memory Alpha, the free Star Trek reference

A floor vault is a place to keep valuables such as gold-pressed latinum. It is difficult to break into and commonly used by entrepreneurs who want a conspicuous place to hide their goods.

Quark had a floor vault to keep his latinum, which his brother Rom broke into on at least one occasion in order to store the extra profits Quark's bar earned while Quark was on a business trip. Rom replaced the damaged parts out of his own salary, and Quark did not notice; however, when Quark learned of this "treachery," he became angry and claimed Rom could not be trusted. (DS9: "Necessary Evil")