Meaning ofguardrailin English

Noun

1. a barrier alongside a hazardous area; for safety
   The road had a guardrail to prevent cars from falling off the cliff.
2. a type of rail for guiding or aligning
   The manufacturer installed a guardrail on the production line to ensure accurate assembly.
3. a preventive measure against errors or accidents
   The company implemented a guardrail to protect against data breaches.