- the fluid (red in vertebrates) that is pumped through the body by the heart and contains plasma, blood cells, and platelets;
"blood carries oxygen and nutrients to the tissues and carries away waste products" "the ancients believed that blood was the seat of the emotions"
- temperament or disposition;
"a person of hot blood"
- a dissolute man in fashionable society
- the descendants of one individual;
"his entire lineage has been warriors"
- people viewed as members of a group;
"we need more young blood in this organization"