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bull wheel

American  

noun

Machinery.
  1. any large driving gear among smaller gears.


Etymology

Origin of bull wheel

An Americanism dating back to 1820–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Our empty chairs were whipped around by the huge bull wheel before starting the long flight downhill.

From The New Yorker • Jun. 1, 2015

It was operated by a bull wheel above the top of the tower, the turning ropes running down inside the mast to the foot block and thence horizontally to the operating motor.

From Concrete Construction Methods and Costs by Gillette, Halbert Powers

Instinct, rather than reason, warned Buddy not to check the blinding revolutions of the bull wheel.

From Flowing Gold by Beach, Rex Ellingwood

It will be noted that the guys are below the bull wheel so that the boom has a clear swing through a complete circle.

From Concrete Construction Methods and Costs by Gillette, Halbert Powers