Elevage is a French term that is a sort of vague one, meaning the "breeding" or "noble traits" of a wine, sort of like you would talk about a fine racehorse or a blue-blooded princess. It is a very positive term, implying that the vineyard manager and the winemaker have taken a lot of time, care, and attention nurturing this wine along through its various stages.

Wine Glossary Main Listing
E Glossary Words