Raw sugar is a sugar product that results from the single crystallization of cane syrup and the removal of most, but not all, molasses. The sugars called Demerara sugar or Turbinado sugar are both raw sugars; the terms "evaporated cane juice" or "evaporated cane sugar" are also sometimes used to describe raw sugar.
Raw sugar is not the "unrefined" or natural state of cane sugar; it has already undergone boiling, crystallization, centrifugation, and washing, and most of the original cane molasses has been removed. Unrefined sugar, which includes jaggery, muscovado, panela, certain molasses, piloncillo and cane syrup, is much closer to the natural product that results from pressing sugarcane.
Raw sugar that is subject to addition refinement steps becomes refined sugar, which includes the white sugar and brown sugar that are familiar from baking.