aqueducts

/AE1 K W AH0 D AH0 K T S/
noun
  1. 1

    An artificial channel that is constructed to convey water from one location to another.

  2. 2

    A structure carrying water over a river or depression, especially in regards to ancient aqueducts.

Source: https://en.wiktionary.org/wiki/aqueduct, https://en.wiktionary.org/wiki/aqueducts