That's true, jazzy, but not to red and white wines otherwise (by "champagne" I meant sparkling wines in general).
And malone: my 1960 Concise OED also says simply wine, but I assure you , there is no such thing as a "brut" red or white wine other than the "sparkling" variety. The French Hachette & Larousse dictionaries say specifically champagne only --- unless of course the British have taken the word over for general use, which I can't really imagine.