feedstuff \ˈ ̷ ̷ˌ ̷ ̷\noun orfeedingstuff\ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\ : a feed for domestic animals; usually: any of the constituent nutrients of an animal ration < cotton-seed meal has proved a useful feedstuff in fattening rations > < the basic feedstuffs, carbohydrate, fat, and protein >