blood vessel

noun

1. any of the vessels, as arteries, veins, or capillaries, through which the blood circulates.

noun

1. an artery, capillary, or vein

n.

1. An elastic tubular channel, such as an artery, a vein, a sinus, or a capillary, through which the blood circulates.

1. An elastic tube or passage in the body through which blood circulates; an artery, a vein, or a capillary.