First, let us go to the definition of aqueduct to further understand the word. Aqueduct is actually a type of structure (pretty much like a canal) that would carry water over from one end of a valley or a river to the other side. In a general sense, this is anything that can carry water from one part to another. If used in a sentence, it would be something like, "Our friend, who is an engineer, just showed us his design for the aqueduct that he is building for the town."
