kingpin

  1. the most important person in a group or undertaking
  2. bolt that provides a steering joint in a motor vehicle
  3. the front bowling pin in the triangular arrangement of ten pins

kingpin

[n] - the most important person in a group or undertaking
Found on http://www.webdictionary.co.uk/definition.php?query=kingpin

Kingpin

The headpin or the number 5 pin, varying with local usage.
Found on http://www.bowlersparadise.com/help/glossary.shtml

Kingpin

[automotive part] The kingpin, also king-pin and king pin, is the main pivot in the steering mechanism of a car or other vehicle. ==History== Originally, with the `turntable` steering of horse-drawn wagons, this was a single pin on which the moveable axle was pivoted beneath the wagon`s frame. This located the axle from side to side, but th...
Found on http://en.wikipedia.org/wiki/Kingpin_(automotive_part)

Kingpin

Strictly speaking, the 5-pin, because its action is usually the key to knocking down more pins; occa
Found on http://www.superglossary.com/Glossary/Entertainment/Bowling/
No exact match found