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guardrail

[ gahrd-reyl ]

noun

  1. Also guardrailing. a protective railing, rail, railing, as along a road or stairway.
  2. Railroads. a rail laid parallel to a track to prevent derailment or to keep derailed rolling stock from leaving the roadbed.


guardrail

/ ˈɡɑːˌɪ /

noun

  1. a railing at the side of a staircase, road, etc, as a safety barrier
  2. Also called (Brit)checkrail railways a short metal rail fitted to the inside of the main rail to provide additional support in keeping a train's wheels on the track
“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
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Word History and Origins

Origin of guardrail1

First recorded in 1825–35; guard + rail 1
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Example Sentences

Examples have not been reviewed.

“The question is, do we have the guardrails for our Constitution to survive?”

From

"If we're going to really use AI properly, we have to set guardrails around how we use it conscientiously," she said.

From

The guardrails of democracy and “the institutions” and “the rule of law” have been laid bare and splayed open; they are so very weak.

From

It's not the first time that the platform's lack of verification guardrails has been used to sew chaos and spread misinformation.

From

Sen. Chuck Grassley, R-Iowa, introduced a bipartisan bill on Thursday to put some guardrails on Trump’s ability to levy tariffs, including requiring the president to get Congressional approval within 60 days on new tariffs.

From

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