Answer: kingpin

AnswerCrossword Clue
KINGPINV.I.P.
kingpinngbolt
kingpina central bolt connecting an axle to a vehicle, also KINGBOLT
kingpinany of several bowling pins as
kingpinpin connecting the two parts of a knuckle joint (as in an automobile steering linkage)
kingpinadpin
KINGPINHigh muck-a-muck
KINGPINBowler's aim
KINGPINTop banana
KINGPINMarlo Stanfield, e.g., on "The Wire"
KINGPINCartel leader
KINGPINTop dog
KINGPIN55 + 62
KINGPINTop man.
KINGPINChief person in a group: Colloq.
KINGPINMan at the top
KINGPINCartel chief
KINGPINCapo di tutti capi
KINGPINBig cheese
KINGPINChief
KINGPINLeader