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waterwheel

[waw-ter-hweel, -weel, wot-er-] /ˈwɔ tərˌʰwil, -ˌwil, ˈwɒt ər-/
noun
1.
a wheel or turbine turned by the weight or momentum of water and used to operate machinery.
2.
a wheel with buckets for raising or drawing water, as a noria.
3.
the paddle wheel of a steamboat.
Also, water wheel.
Origin
late Middle English
1375-1425
1375-1425; late Middle English; see water, wheel
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for water wheel

water wheel

noun
1.
a simple water-driven turbine consisting of a wheel having vanes set axially across its rim, used to drive machinery
2.
a wheel with buckets attached to its rim for raising water from a stream, pond, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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