noun
- any of the vessels, as arteries, veins, or capillaries, through which the blood circulates.
noun
- an artery, capillary, or vein
n.
- An elastic tubular channel, such as an artery, a vein, a sinus, or a capillary, through which the blood circulates.
- An elastic tube or passage in the body through which blood circulates; an artery, a vein, or a capillary.
The flexible tubular canals through which blood circulates in the body. Arteries, veins, and capillaries are all kinds of blood vessels. (See circulatory system.)