WordNet
blood meal
n. the dried and powdered blood of animals
Wikipedia
Blood meal
Blood meal is a dry, inert powder made from blood used as a high- nitrogen organic fertilizer and a high protein animal feed. N = 13.25%, P = 1.0%, K = 0.6%. It is one of the highest non-synthetic sources of nitrogen. It usually comes from cattle or hogs as a slaughterhouse by-product.
Usage examples of "blood meal".
By massing together, they could comb the caves more successively for any potential sources of a blood meal, taking down larger prey by their sheer numbers—.