noun:a supply of goods or materials available for sale or use
The store has a large stock of winter coats.
noun:a share in a company
She invested in the company's stock.
noun:a liquid used to add flavor to food, made by boiling meat or fish bones or vegetables in water
I used homemade chicken stock for the soup.
noun:animals, such as cows or sheep, kept on a farm
Protecting the stock from predators is a constant concern.