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Meaning of WATER WHEEL

WordNet Dictionary
  1. [n]  a wheel that rotates by direct action of water; a simple turbine
  2. [n]  a wheel with buckets attached to its rim; raises water from a stream or pond
 Synonyms: waterwheel
 See Also: bucket, millwheel, noria, pail, water mill, wheel



Webster's 1913 Dictionary
\Wa"ter wheel`\
1. Any wheel for propelling machinery or for other purposes,
   that is made to rotate by the direct action of water; --
   called an {overshot wheel} when the water is applied at
   the top, an {undershot wheel} when at the bottom, a
   {breast wheel} when at an intermediate point; other forms
   are called {reaction wheel}, {vortex wheel}, {turbine
   wheel}, etc.

2. The paddle wheel of a steam vessel.

3. A wheel for raising water; a noria, or the like.