power steering

noun Automotive.
  1. an automotive steering system in which the engine's power is used to supplement the driver's effort in turning the steering wheel.

Origin of power steering

First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for power steering

power steering

noun
  1. a form of steering used on vehicles, where the torque applied to the steering wheel is augmented by engine powerAlso called: power-assisted steering
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012