a disease caused by deficiency of niacin or tryptophan (or by a defect in the metabolic conversion of tryptophan to niacin); characterized by gastrointestinal disturbances and erythema and nervous or mental disorders; may be caused by malnutrition or alcoholism or other nutritional impairments
temperament or disposition; "a person of hot blood"
the fluid (red in vertebrates) that is pumped by the heart; "blood carries oxygen and nutrients to the tissues and carries waste products away"; "the ancients believed that blood was the seat of the emotions"
people viewed as members of a group; "we need more young blood in this organization"
smear with blood, as in a hunting initiation rite, where the face of a person is smeared with the blood of the kill