from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any source of energy derived from running or falling water; originally obtained from a waterwheel immersed in a stream; modern hydroelectric power is obtained from turbines fed from reservoirs
from the GNU version of the Collaborative International Dictionary of English
- The power of water employed to move machinery, etc.
- A fall of water which may be used to drive machinery; a site for a water mill; a water privilege.
from The Century Dictionary and Cyclopedia
- n. The power of water employed, or capable of being employed, as a prime mover in machinery; hence, a fall or descent in a stream capable of being utilized for mechanical purposes.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the power to do work that is latent in a head of water
Sorry, no etymologies found.