1) Castor bean 2) Castor bean or sesame 3) Castor or sesame 4) Certain fat source 5) Seed 6) Sesame 1) Cottonseed 2) Flaxseed 3) Linseed 4) Rapeseed 
• (n.) A cruciferous herb (Camelina sativa). • (n.) Seed from which oil is expressed, as the castor bean; also, the plant yielding such seed. See Castor bean. • (n.) The sesame.
(from the article `Agriculture and Food Supplies`) For the 2005–06 crop year, world oilseed production rose 1.8% to 388 million metric tons. Production in the 2006–07 crop year was expected to rise ... World oilseed, oilmeal, and vegetable oil production also increased. For the 2004–05 crop year, world oilseed production ...
Oil'seed` noun (Botany) (a) Seed from which oil is expressed, as the castor bean; also, the plant yielding such seed. See Castor bean . (b) A cruciferous herb ( Camelina sativa ). (c) The sesame. 
[n] - any of several seeds that yield oil
oil-rich seed noun any of several seeds that yield oil