In Bordeaux the words château, cuverie, and chai can be used interchangeably to mean a wine estate.
Three of the most important wine words in Bordeaux are château, cuverie, and chai. Though we think of a château as a palatial estate, anything can be a château in Bordeaux—from a farmhouse to a garage. The word simply refers to a building attached to vineyards, with winemaking and storage facilities on the property. Within the château is the cuverie (coo-ver-EE), the building where the wine will be made, and the chai (pronounced shay), the cellar where it will be stored and aged.