Pronunciation: (ak'wi-dukt"), [key]
1. Civ. Eng.
a. a conduit or artificial channel for conducting water from a distance, usually by means of gravity.
b. a bridgelike structure that carries a water conduit or canal across a valley or over a river.
2. Anat.a canal or passage through which liquids pass.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.