MEANING: noun:
1. The most important person in an organization, especially one who is the head of a crime organization.
2. The tallest, foremost, or the central pin in an arrangement of bowling pins.
3. A main bolt, for example, a large vertical bolt in an axle of a vehicle.

ETYMOLOGY: From skittles, a lawn game involving pins that are toppled by a ball, the ancestor of modern bowling. Earliest documented use: 1773.

KING-PING - the most recent arrival in the Panda zoo

DING PIN - fashion accessory with a dent in it

KING PUN - paranomastic equivalent of Monte Python's "Killer Joke"