U.S. Republican presidential candidate Donald Trump (2nd from L) watches with his wife Melania as Serena Williams of the U.S. plays against her sister and compatriot Venus Williams in their quarterfinals match at the U.S. Open Championships tennis tournament in New York, September 8, 2015.
(plural aqueducts). 1  An artificial channel that is constructed to convey water from one location to another. 2  A structure carrying water over a river or depression, especially in regards to ancient aqueducts.
Learner's definition of DAM. [count] : a structure that is built across a river or stream to stop water from flowing. The government has plans to build a dam and flood the valley. There's a beaver dam [=a dam built by beavers] in the stream behind my house. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. â compare 3dam.