Cru/kruː/ Definition 1 of 2Pro Tip 1/3Wine Hierarchy Understand that 'cru' can indicate the quality level of a vineyard within wine classification systems. Château Margaux is a famous grand cru estate. Pro Tip 2/3Geographic Specificity 'Cru' is primarily used in reference to French vineyards or in contexts influenced by French winemaking. They visited a cru in Bordeaux. Pro Tip 3/3Wine Labeling Expect to see 'cru' on labels of high-quality wine bottles, indicating their origin. Look for 'premier cru' on the label for a top-quality wine.