WordWeb Online

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