What is the meaning of Gold_plate?

A thin layer of gold applied to the surface of an object, often by an electrolytic method.

Used other than figuratively or idiomatically: see gold,‎ plate.

To apply gold plate to an object, to plate with gold.

Of a project, to incorporate costly or otherwise excessive features or refinements unnecessarily, to overengineer.

Of a law, regulation, etc., to embellish, to extend beyond its intended scope, especially so as to become stifling, or rigid and inflexible.

Source: wiktionary.org