[French fumé, smoky (from past participle of fumer, to smoke) + French blanc, white.]
Sau·vi·gnon Blanc (sō-vē-nyôɴ' bläɴ') n.
In both senses also called Fumé Blanc.
A variety of grape originally grown in France and now cultivated in many other wine-producing regions as well, including the United States, Chile, and Australia.
A light white wine made from this grape.
[French : from or akin to obsolete dialectal French servagnin, sarvinien, regional names for types of grape + blanc, white.]