aqueduct (n.) Look up aqueduct at Dictionary.com
"artificial water channel," 1530s, from Latin aquaeductus, properly aquae ductus "a conveyance of water," from aquae, genitive of aqua "water" (from PIE root *akwa- "water"), + ductus "a leading, conducting," past participle of ducere "to lead," from PIE root *deuk- "to lead."