Adjective

1. Pertaining to a distinct variety of organism.
2. Made from a single specific variety (especially of grapes in wine).

Noun

1. A wine made primarily from or exclusively from a single variety of grape, which carries the name of that grape.

   The varietal Merlot has rich red color and a robust fruity taste. Cabernet Sauvignon is a varietal that descended from Cabernet Franc and Sauvignon Blanc.

2. By extension, a coffee made primarily from or exclusively from a single variety of coffee bean.