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truck bolster

American  

noun

Railroads.

  1. the upper transverse member of a car truck that holds the truck center plate and receives the car's weight.

Etymology

Origin of truck bolster

First recorded in 1890–95

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.