He was a thing of blood, whose every motion
Was timed with dying cries.
Shak.
8. Temper of mind; disposition; state of the passions; -- as if the blood were the seat of emotions.
When you perceive his blood inclined to mirth.
Shak.
Often, in this sense, accompanied with bad, cold, warm, or other qualifying word. Thus, to commit an act in cold blood, is to do it deliberately, and without sudden passion; to do it in bad blood, is to do it in anger. Warm blood denotes a temper inflamed or irritated. To warm or heat the blood is to excite the passions. Qualified by up, excited feeling or passion is signified; as, my blood was up.