Anglo-Norman language
In the singular, Langue d'oïl refers to the mutually intelligible linguistic variants of "lingua romana" spoken since the 9th century in northern France and southern Belgium (Wallonia), since the 10th century in the Channel Islands, and between the 11th and 14th centuries in England (the Anglo-Norman language). "Langue d'oïl", the term itself, has been used in the singular since the 12th century to denote this ancient linguistic grouping as a whole. With these qualifiers, "langue d'oïl" sometimes is used to mean the same as Old French (see "History" below).