If the wine comes in a box or a jug with a screw top and is given some absurdly dignified title such as Chablis (for white wine) or Burgundy (for red wine), it's commonly referred to as generic wine, since it is only a type of wine and not a specific varietal from a unique geographical area. It's a safe bet that a generic wine has little or nothing to do with the famous European winegrowing region referred to on the label.