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bull wheel

noun, Machinery
1.
any large driving gear among smaller gears.
Also called bull gear.
Origin of bull wheel
1820-1830
1820-30, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for bull wheel
Historical Examples
  • It will be noted that the guys are below the bull wheel so that the boom has a clear swing through a complete circle.

    Concrete Construction Halbert P. Gillette

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6
10
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