Focus on the pronunciation of buffer stock
English definition of “buffer stock”
noun [C or U]
› ECONOMICS, FINANCE a large supply of a commodity (= a crop, metal, fuel, etc.) that is bought and stored when extra is available, and sold when there is not enough, in order to control its price and quantity in the economy: Rubber prices fell to a four-year low, despite purchases for the buffer stock.
› COMMERCE, PRODUCTION extra products, supplies, etc that a company keeps, so it always has enough available to sell or use: Management wants to keep a buffer stock of 500 units.