Kingpin or king pin may refer to:
==Vehicular part== Kingpin (automotive part), the pivot in the steering mechanism The central bolt of a skateboard, axle assembly ("truck"), around which the rest of the mechanism can flex, allowing the rider to steer by shifting body weight The pivot or connector between a tractor and trailer in the fifth-wheel coupling of semi-trailer truck The pivot in a railway car bogie
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).