underframe

American  

[uhn-der-freym] / ˈʌn dərˌfreɪm /

noun

1. the lower frame on which a vehicular structure rests.

   the underframe of a bus.

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Etymology

Origin of underframe

First recorded in 1850–55; under- + frame

Example Sentences

See Examples For:

underframe

Those angle cocks had come into contact with the underframe of the third train car, closing the valves and rendering the air brakes ineffective.

From Washington Post ● Jan. 13, 2018

He followed them with rock drills, presses giving unheard-of high powers, improved wood distilling and now an underframe for railway cars that is revolutionary.

From Time Magazine Archive

M, is of the internal pole type, and is supported on the underframe of the wagon.

From Scientific American Supplement, No. 1157, March 5, 1898 by Various

For gages of 20 inches and upward the motors can be mounted on springs and attached to the running axles inside of the wagon underframe.

From Scientific American Supplement, No. 1157, March 5, 1898 by Various

Its place was then supplied by other and better vehicles,—though they were no other than old stage-coach bodies purchased by the company, and each mounted upon an underframe with flange-wheels. 

From Lives of the Engineers The Locomotive. George and Robert Stephenson by Smiles, Samuel