varietal

adjective

1. of, pertaining to, designating, or characteristic of a variety.
2. constituting a variety.
3. (in U.S. winemaking) designating a wine made entirely or chiefly from one variety of grape.

noun

4. a varietal wine named for such a grape (distinguished from generic).

adjective

1. of, relating to, characteristic of, designating, or forming a variety, esp a biological variety

noun

2. a wine labelled with the name of the grape from which it is pressed

adj.

1866, a biologists’ word (first attested in Darwin), from variety. In reference to wines, meaning “made from a single variety of grape” is first attested 1941, American English. As a noun, in this sense, attested from 1955.