blood

n. 1 usu. Red fluid circulating in the arteries and veins of animals. 2 bloodshed, esp. Killing. 3 passion, temperament. 4 race, descent, parentage (of the same blood). 5 relationship; relations (blood is thicker than water). 6 dandy. v. 1 give (a hound) a first taste of blood. 2 initiate (a person).  in one's blood inherent in one's character. [old english]

n. The fluid which circulates in the principal vascular system of animals, carrying nourishment to all parts of the body, and bringing away waste products to be excreted. See under Arterial.