(vulgar slang, of men) To urinate.

(anatomy) The portal vein.

plural of black-veined white

A large species of butterfly, Aporia crataegi, native to Europe and parts of Asia.

(anatomy) A large vein running from the apex of the heart to the base of the ventricles.

(anatomy) A vein that collects the blood from the interior of the cranium, the superficial part of the face, and the neck, runs down the neck on the outside of the internal and common carotid arteries, and unites with the subclavian vein to form the brachiocephalic vein.

(anatomy) A broad unpaired vein formed by the junction of internal cerebral veins and uniting with the inferior sagittal sinus to form the straight sinus.

(pathology) Alternative spelling of deep vein thrombosis

(anatomy) Either of two veins, of which one is formed on each side of the body by the union of the external and internal iliac veins, and which unite to form the inferior vena cava at the level of the fifth lumbar vertebra.

(pathology) A potentially fatal condition in which one or more thrombi (or clots) form in the predominantly the leg or, more unusually, the arm. The clot may break free from the venous wall and travel via the circulatory system to the heart or to the lungs (causing a pulmonary embolism); this condition is often caused by keeping the legs bent for long periods but can also be caused by other medical problems.