Duct (?), n. [L. ductus a leading, conducting, conduit, fr. ducere, ductum, to lead. See Duke, and cf. Douche.]
Any tube or canal by which a fluid or other substance is conducted or conveyed.
One of the vessels of an animal body by which the products of glandular secretion are conveyed to their destination.
A large, elongated cell, either round or prismatic, usually found associated with woody fiber.
⇒ Ducts are classified, according to the character of the surface of their walls, or their structure, as annular, spiral, scalariform, etc.
© Webster 1913.