(This is the pin located on the semi trailer which sits in the fifth wheel when a semi-trailer is coupled to the cab unit)

Either the headpin or the 5-pin. Varies regionally.

The kingpin is the part of the trailer that attaches to the fifth-wheel hitch. As part of the upper fifth-wheel coupler, the kingpin engages with the jaws of the fifth-wheel and holds the trailer firmly in place while letting the trailer turn freely.

The Kingpin (Wilson Fisk) is a fictional character, a Marvel Comics villain who has battled many Marvel crime-fighters, most often The Punisher, Spider-Man, and Daredevil. Created by writer Stan Lee and artist John Romita, Sr., he first appeared in The Amazing Spider-Man #50 (July 1967). He was modeled after Sydney Greenstreet's character in The Maltese Falcon.

Kingpin was an American crime/drama mini-series which debuted on the NBC network in the U.S. and CTV in Canada on February 2, 2003 and lasted 6 episodes. NBC's answer to The Sopranos and also influenced by The Godfather, Macbeth and Traffik, the story was about a Mexican drug trafficker named Miguel Cadena (Yancey Arias) and his family life. It was to be followed by a television series, but low ratings canceled those plans.

Kingpin is a 1996 Farrelly brothers film starring Woody Harrelson, Bill Murray and Randy Quaid.

KP] (game) Please send new additions and/or corrections to [email protected].

the most important person in a group or undertaking