aqueduct
US /ˈæk.wə.dʌkt/
UK /ˈæk.wə.dʌkt/
1.
an artificial channel for conveying water, typically in the form of a bridge supported by tall columns across a valley or other gap.
:
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The ancient Romans built impressive aqueducts to supply water to their cities.
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The modern aqueduct system ensures efficient water distribution.