a cylindrical device passing through the center plates of both the body bolster and the truck bolster, permitting the truck to swivel beneath the car body while the stress is taken by the center plate.
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- center of gravity,
- center of mass,
- center of ossification,
- center of percussion,
- center of symmetry,
- center plate,
- center punch,
- center spread,
- center wheel,
Origin of center pin
First recorded in 1795–1805
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for center pin
It is made fast to the main rail by a screw, and upon it the wippen is hinged by means of a "center-pin" at the lower end.Piano Tuning|J. Cree Fischer