The varietal of a wine is the type of grape that it is made from. The wine then carries the name of that grape. Common varietals include Pinot Grigio, Chardonnay, Merlot and Cabernet Sauvignon. In the United States a wine may carry the name of the designated varietal if it is comprised of at least 75% of that particular grape. Otherwise the wine is said to be a blend, or generic.
Have a safe and enjoyable holiday season!