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Noun: kingpin  'king,pin
  1. The most important person in a group or undertaking
    - top banana, bigwig
  2. Bolt that provides a steering joint in a motor vehicle
    - kingbolt, swivel pin
  3. The front bowling pin in the triangular arrangement of ten pins
    - headpin

Derived forms: kingpins

Type of: bolt, bowling pin, important person, influential person, personage, pin

Encyclopedia: Kingpin