A sample of blood.

A serologic analysis of a sample of blood; a test in which blood is removed from a subject and analyzed to determine the presence or levels of any of a variety of substances which indicate whether the subject has health problems.

(idiomatic) In a ruthless and unfeeling manner, particularly as applied to first-degree murder committed without provocation and with malice aforethought.

A type of orange (Citrus sinensis) notable for its dark, crimson red flesh.

plural of blood clot

(hematology, pathology) A clot formed from platelets and other elements; that forms in a blood vessel in a living organism, and causes thrombosis or obstruction of the vessel at its point of formation or travel to other areas of the body.

(pathology) The presence in the bloodstream of microorganisms or their toxins in sufficient quantity to cause serious illness; sepsis or septicemia.

blood sausage

Performed with vigor, ferocity, passion, or violence (especially in competition).

Easily angered or excited