1. 
   Crown Wheel
   The escape-wheel in a verge watch is sometimes so called because of the shape of its teeth.
   Found op http://www.timtemplewatches.com/information_watch_dictionary1.html
   
   
2. 
   Crown wheel
   Crown' wheel` (hw?l`). [ Named from its resemblance to a crown .] (Machinery) A wheel with cogs or teeth set at right angles to its plane; -- called also a contrate wheel or face wheel .
   Found op http://www.encyclo.co.uk/webster/C/194
   
   
3. 
   Crown wheel
   • A wheel with cogs or teeth set at right angles to its plane; -- called also a contrate wheel or face wheel.
   Found op http://thinkexist.com/dictionary/meaning/crown_wheel/
   
   
4. 
   Crown wheel
   In a windmill, a Crown Wheel is an auxiliary gear on the Upright Shaft.
   Found op http://en.wikipedia.org/wiki/Glossary_of_mill_machinery
   
   
5. 
   Crown Wheel
   The Crown Wheel is a driving wheel located at the top of the Upright Shaft
   Found op http://en.wikipedia.org/wiki/Glossary_of_mill_machinery
   
   
6. 
   Crown Wheel
   A crown wheel is a type of cog with the cogs arranged at a right angle to the plane.
   Found op http://www.probertencyclopaedia.com/browse/GC.HTM
   
   
7. 
   crown-heel
   (length) Type: Term Definitions: 1. length of an outstretched embryo during the eighth week or of a fetus from cranium vertex to heel (standing length). See: Streeter developmental horizon(s)
   Found op http://www.medilexicon.com/medicaldictionary.php?t=48748
   
   

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