Definition: Meat Meal: The rendered product from mammal tissues, exclusive of blood, hair, hoof, horn, hide trimmings, manure, stomach and rumen contents except in such amounts as may occur unavoidably in good processing practices.
What this definition doesn't state is that "4D animals" (diseased, dying, decayed, and dead animals) can still be legally used in meat meal. In this case "good processing practices" is an oxymoron.
Examples:
Although I discourage the practice as a rule, I would feed my cats scraps from my table if the only other form of food I could find for them contained meat meal.
