Definition of guardrail
: a railing guarding usually against danger; especially : a barrier placed along the edge of a highway at dangerous points
Explore Merriam-Webster
Examples of guardrail in a sentence
the car ran off the road, but fortunately only hit the guardrail
1860
First Known Use of guardrail
1860
GUARDRAIL Defined for English Language Learners
guardrail
play
noun
guard·rail
\ˈgärd-ˌrāl\
Definition of guardrail for English Language Learners
-
: a strong metal bar along the side of a road that prevents vehicles from driving off the road
-
: a strong bar or fence that prevents people from falling off a deck, bridge, etc.
Learn More about guardrail
Seen and Heard
What made you want to look up guardrail? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!