Crossword Genius

Hydroelectric power source (3)

Ross

I believe the answer is:

dam

'hydroelectric power source' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for dam that I've seen before include "Animal's mother" , "Barrier to contain the flow of water" , "Mother of quadruped" , "Mad as an animal mum" , "Mother - barrier" .)

I've seen this clue in the USA Today, the Wall Street Journal, The Washington Post, the LA Times, the L.A. Times Daily and the Universal.
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