pièce de résistance
This French expression literally means "piece of resistance" in English, but it is used with two other meanings in this language.
First, it can be used to describe something outstanding, both regarding a great feat or a showpiece. Secondly, it can be used as a culinary term, describing the main or foremost dish of a meal.
In Oxford English Dictionary since 1839.
Example: "The Everything Engine is a programmatical pièce de résistance, the apex of our civilization."
This is an entry in the mini series about French expressions in the English