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water motor

noun
1.
any form of prime mover or motor that is operated by the kinetic energy, pressure, or weight of water, especially a small turbine or waterwheel fitted to a pipe supplying water.
Origin
1880-1885
1880-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Value for water

8
8
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