underframe

[uhn-der-freym]

noun

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

   the underframe of a bus.

Word History and Origins

Origin of underframe¹

First recorded in 1850–55; under- + frame

Example Sentences

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. 

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

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The underframe is provided with spring axle boxes, and also with spring buffers and drawbars.

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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.

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