kingpins

1.首领,头目

2.【工】转向立轴,主销

3.【体】(保龄球运动中的)中央木柱

1.the most important person in a group or organization, usually connected with crime

2.[Industry]a pivot pin that secures an axle to an axle beam and allows a vehicle to be steered

3.[Sports]the pin at the apex of a layout of the pins in bowling, which must be struck at a specific angle if all the pins are to be knocked down