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
Important guardrails to know before switching Google added limits to prevent abuse and confusion.
—
Kurt Knutsson, FOXNews.com, 3 Jan. 2026
Other measures require law enforcement agencies to clearly disclose their use of AI tools and impose guardrails on companion-style chatbots, particularly when minors are involved.
—Aamir Khollam, Interesting Engineering, 2 Jan. 2026
What Else to Expect from Gelt Gelt says more calculators are on the roadmap, including tools covering the Augusta Rule and hiring a spouse or children, pairing estimates with guardrails for compliance.
—Connie Etemadi, USA Today, 2 Jan. 2026
Grok, the chatbot of Elon Musk’s artificial intelligence company xAI, published sexualized images of children as its guardrails seem to have failed when it was prompted with vile user requests.
—Los Angeles Times, 2 Jan. 2026
See All Example Sentences for guardrail
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Kurt Knutsson, FOXNews.com, 3 Jan. 2026
Other measures require law enforcement agencies to clearly disclose their use of AI tools and impose guardrails on companion-style chatbots, particularly when minors are involved.
—Aamir Khollam, Interesting Engineering, 2 Jan. 2026
What Else to Expect from Gelt Gelt says more calculators are on the roadmap, including tools covering the Augusta Rule and hiring a spouse or children, pairing estimates with guardrails for compliance.
—Connie Etemadi, USA Today, 2 Jan. 2026
Grok, the chatbot of Elon Musk’s artificial intelligence company xAI, published sexualized images of children as its guardrails seem to have failed when it was prompted with vile user requests.
—Los Angeles Times, 2 Jan. 2026
See All Example Sentences for guardrail
Cite this Entry
“Guardrail.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/guardrail. Accessed 10 Jan. 2026.
Copy CitationKids Definition
guardrail
noun
guard·rail
ˈgär-ˌdrāl
: a protective railing placed along dangerous areas (as of a road)
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