Kingpin

Kingpin or king pin, originally a target in early ball games like ground billiards, has taken on a meaning of 'key component' and metaphorically of 'boss'. Today, it may refer to:


Kingpin or king pin, originally a target in early ball games like ground billiards, has taken on a meaning of 'key component' and metaphorically of 'boss'. Today, it may refer to:
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