Aqueduct
Aqueduct ({not transcribed}) , noun
[French aqueduc, Old French aqueduct (Cotgr.), from Latin aquaeductus; aquae, gen. of aqua water + ductus a leading, ducere to lead. See Aqua, Duke.]
1.
A conductor, conduit, or artificial channel for conveying water, especially one for supplying large cities with water.
The term is also applied to a structure (similar to the ancient aqueducts), for conveying a canal over a river or hollow; more properly called an aqueduct bridge.
2.
(Anatomy) A canal or passage; as, the aqueduct of Sylvius, a channel connecting the third and fourth ventricles of the brain.