noun A white, albuminous, fibrous substance, formed in the coagulation of the blood.
noun An elastic, insoluble, whitish protein produced by the action of thrombin on fibrinogen and forming an interlacing fibrous network in the coagulation of blood.
noun An albuminous body, resembling animal fibrin in composition, found in cereal grains and similar seeds; vegetable fibrin.
verb To apply fibrin sealant to a surgical site to either stop bleeding or for surgical flap closure.