PINION

Pinion

A pinion is a round gear used in several applications: usually the smallest gear in a gear drive train, although in the case of John Blenkinsop's Salamanca, the pinion was rather large. In many cases, such as remote controlled toys, the pinion is also the drive gear, the smaller gear that drives in a 90-degree angle towards a crown gear in a differential drive, the small front sprocket on a chain driven motorcycle., the round gear that engages and drives a rack in a rack and pinion mechanism and against a rack in a rack railway, in the case of radio-controlled cars with an engine this pinion gear can be referred to as a clutch ...

The above text is a snippet from Wikipedia: Pinion
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pinion

Noun

  1. A wing.
  2. The joint of a bird's wing farthest from the body.
  3. Any of the outermost primary feathers on a bird's wing.
  4. A moth of the genus Lithophane.
  5. A fetter for the arm.

Noun (etymology 2)

  1. The smallest gear in a gear drive train.

Verb

  1. To remove the joint of a bird's wing farthest from the body to prevent the bird from flying.
  2. To restrain by binding or holding the arms.


The above text is a snippet from Wiktionary: pinion
and as such is available under the Creative Commons Attribution/Share-Alike License.

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