noun.
Properly, a French brandy of superior quality distilled from wines produced in the neighborhood of Cognac in the department of Charente, France; more loosely, any of the brandies of that department.
noun.
In Europe, any brandy of good quality (this name having superseded the original terms eau-de-vie, branntwein, etc.); in the United States, French brandy in general. See champagne.