Distilled spirits produced in an unlicensed, unregulated still and without payment of taxes, and hence, illegal Seldom aged, and produced from anything that will ferment, moonshine is often a health hazard
whiskey illegally distilled from a corn mash distill (alcohol) illegally; produce moonshine
disapproval If you say that someone's thoughts, ideas, or comments are moonshine, you think they are foolish and not based on reality. As Morison remarks, the story is pure moonshine. = nonsense