Definition of varietals:
(adj) :
Made from a single specific variety (especially of grapes in wine).
(n) :
A wine made primarily from or exclusively from a single variety of grape, which carries the name of that grape.
(n) :
(by extension) A coffee made primarily from or exclusively from a single variety of coffee bean.
(adj) :
(biology) Pertaining to a distinct variety of organism.
(adj) :
(linguistics) Of or relating to a variety of a language.