(anatomy) a vein running up the right side of the thoracic vertebral column draining itself towards the superior vena cava

(pathology) An abnormally swollen or dilated vein. / (in the plural) The medical condition of having such veins, especially in the legs.

(anatomy) Any of several veins on each side of the neck, which drain the brain, face and neck of deoxygenated blood.

(anatomy) In tetrapods, a vein that returns blood to the heart after it has circulated through the lungs.

plural of varicose vein

(anatomy) A short, wide vein located in the abdominal cavity formed by the union of the superior mesenteric and splenic veins that channels blood from the gastrointestinal tract and spleen to capillary beds in the liver.

plural of portal vein

(anatomy) The great saphenous vein, or (less commonly) the small saphenous vein.

Of similar kind.

(anatomy) Any of a group of veins on the radial side of the forearm