guardrail
noun
guard·rail
ˈgärd-ˌrāl 
: a railing guarding usually against danger
especially
: a barrier placed along the edge of a highway at dangerous points
Examples of guardrail in a Sentence
the car ran off the road, but fortunately only hit the guardrail
Recent Examples on the Web
At every level—executive, judicial, legislative, corporate, institutional, media—every single guardrail that is supposed to protect our democracy is buckling.
—
Ross O'Keefe, The Washington Examiner, 20 Sep. 2025
Earlier this summer, Prinstein and his colleagues at the APA put out a health advisory about AI and teens, urging AI companies to build guardrails for their platforms to protect adolescents.
—Rhitu Chatterjee, NPR, 19 Sep. 2025
When stopping by the roadside is your only option, position your vehicle as far off the road as possible, ideally beyond guardrails.
—Southern California Weather Report, Oc Register, 19 Sep. 2025
This establishes guardrails and access controls for AI systems that protect against unauthorized access to sensitive data, both by humans and the AI itself.
—Expert Panel®, Forbes.com, 19 Sep. 2025
See All Example Sentences for guardrail
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Ross O'Keefe, The Washington Examiner, 20 Sep. 2025
Earlier this summer, Prinstein and his colleagues at the APA put out a health advisory about AI and teens, urging AI companies to build guardrails for their platforms to protect adolescents.
—Rhitu Chatterjee, NPR, 19 Sep. 2025
When stopping by the roadside is your only option, position your vehicle as far off the road as possible, ideally beyond guardrails.
—Southern California Weather Report, Oc Register, 19 Sep. 2025
This establishes guardrails and access controls for AI systems that protect against unauthorized access to sensitive data, both by humans and the AI itself.
—Expert Panel®, Forbes.com, 19 Sep. 2025
See All Example Sentences for guardrail
Cite this Entry
“Guardrail.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/guardrail. Accessed 21 Sep. 2025.
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guardrail
noun
guard·rail
ˈgär-ˌdrāl
: a protective railing placed along dangerous areas (as of a road)
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