Guardrail (noun)

A rail or barrier along the side of a road, bridge, or other transportation infrastructure designed to prevent vehicles from leaving the roadway and to provide protection for passengers.

Origin:

From the middle english word "garderobe", meaning "guard room".

Examples:

1. The guardrail along the highway kept the car from going over the edge of the cliff.
2. The guardrail on the bridge was damaged in the accident and had to be repaired.
3. The guardrail is an important safety feature on roads and bridges, helping to reduce the number of accidents and fatalities.
4. The guardrail is made of sturdy materials, such as metal or concrete, to ensure its strength and durability.
5. The guardrail is often used in combination with other safety features, such as rumble strips, to provide maximum protection to drivers and passengers.