What does lac de flambeau mean in English?

It is French for "Lake of the torches". When French explorers first discovered the Ojibwe also referred to as Chippewa, Ojibwa living in the area that is now known as Lac du Flambeau in northern Wisconsin, they witnessed the Ojibwe spear fish from birchbark canoes with torches fixed to the front of the canoes during spawning season. The eyes of submerged fish became visible by torchlight and could be speared by the Ojibwe at night.