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2017 Word of the Year

bull gear

noun, Machinery.

bull wheel

noun, Machinery.
1.
any large driving gear among smaller gears.
Also called bull gear.
Origin of bull wheel
1820-1830
An Americanism dating back to 1820-30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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6
10
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