1. A distilled, alcoholic beverage made from a fermented mash of various ingredients including grains or other plants. whiskey, gin, vodka and rum are among the most popular. See also aquavit; arrack; bourbon; brandy; malt liquor; mescal; okolehao; scotch whisky; tequila. 2. An oyster's natural juices are referred to as its "liquor. " 3. pot liquor or pot likker refers to the liquid resulting from cooking meats or vegetables.