oil cake

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The solid residue that is left after certain oily seeds, such as cottonseed and linseed, have been pressed free of their oil. It is ground and used as cattle feed or fertilizer.

from The Century Dictionary.

• noun A cake or mass of compressed linseed, or rape, poppy, mustard, cotton, or other seeds, from which oil has been extracted.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The solid residue remaining after any oilseed has been pressed to remove the vegetable oil; it is used, with other ingredients, as animal food

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun mass of e.g. linseed or cottonseed or soybean from which the oil has been pressed; used as food for livestock