A stock of wines is a collection of wines that are stored in a CELLAR. A CELLAR is a room or area used for storing wine, usually underground and often below the main living area of a home. The term 'CELLAR' is derived from the Latin word cellarium, which means storeroom. The purpose of a CELLAR is to provide a cool, dark, and humid environment for the storage of wines. This helps to preserve the quality of the wines and prevent them from spoiling.