Definition of merveilleuse in English:

merveilleuse

Pronunciation /ˌməːveɪˈjəːz/

noun

historical
  • A Frenchwoman dressed in the extravagant style fashionable during the period of the Directory (the French Revolutionary government of 1795–9), usually comprising a gown with a tight bodice, worn with a very large bonnet.

Origin

Early 19th century. From French merveilleuse, use as noun of feminine of merveilleux.