Oïl is a group of Romance dialects spoken in northern France, including regions like Normandy and Picardy. It is one of the historical languages that evolved from Latin, and it is the ancestor of modern French. The term "Oïl" comes from the word for "yes" in these dialects, which is "oïl," contrasting with "oc," used in the southern dialects. The Oïl dialects include several varieties, such as Picard, Walloon, and Burgundian. These dialects share similarities but also have distinct features. While Oïl is less commonly spoken today, it played a significant role in the development of the French language and culture.