Langues d'oïl
Langue d'oïl (in the singular),  Oïl dialects and Oïl languages (in the plural) refer to all the ancient northern Gallo-Romance languages as well as their modern-day descendants.  The most widely spoken modern Oïl language is French, but others include Norman, Walloon, Picard, Gallo, Poitevin-Saintongeais, and Champenois.