torsion bar

noun

1. a metal bar having elasticity when subjected to torsion: used as a spring in various machines and in automobile suspensions.

torsion bar

noun

1. a metal bar acting as a torsional spring, esp as used in the suspensions of some motor vehicles

Word History and Origins

Origin of torsion bar¹

First recorded in 1945–50

Example Sentences

Wall-mounted models are designed with a torsion bar and put the motor on the wall next to the garage door rather than on the ceiling.

From Popular-Science