cruor /ˈkɹuː.ə(ɹ)/ noun2 •The clotted portion of coagulated blood, containing the colouring matter; gore.The boy is pinched and bled, heated and cooled, sprinkled with powders, spread with salves and a gritty mucilage of peony seeds and cat’s cruor. — 2021 •(no longer used) The colouring matter of the blood.