Definitions for "Oilseeds"
A seed or crop from which an oil is expressed, includes flaxseed, castor bean, sesame, or cottonseed.
Seeds that are used in the production of cooking oils and other food products, such as margarine. Oilseeds include canola, soybean, flaxseed, safflower and sunflower seeds.  ( Agriculture and Agri-Food Canada)