ancien regime is a noun meaning "a political and social system that no longer governs (especially the system that existed in France before the French Revolution)". It carries one recorded sense.
a political and social system that no longer governs (especially the system that existed in France before the French Revolution)
France
Definitions, synonyms and semantic relations for ancien regime come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.