D defs.my
Entry 2 senses Webster, 1913

Aqueduct

/ăk'-wəd-ŭktˌ/ · Aq·ue·duct · IPA /ˈæk.wəˌdʌkt/
01 n. A conductor, conduit, or artificial channel for conveying water, especially one for supplying large cities with water.
  1. 1.
    A conductor, conduit, or artificial channel for conveying water, especially one for supplying large cities with water.
  2. 2.
    A canal or passage; as, the aqueduct of Sylvius, a channel connecting the third and fourth ventricles of the brain.(Anat.)