Definition

The solid surface or foundation on which a road or railroad is built, including the materials that support the structure.

Example

The construction crew worked hard to prepare the roadbed for the new highway.

Conversation

Did you see how they are repairing the roadbed near the station?

Yeah, I noticed that too; it looks like they’re doing a complete overhaul.

I wonder how long it will take to finish the roadbed work.

Probably a few weeks, but it will definitely improve the trains' stability.

Synonyms & Antonyms

Root Explanation

Roadbed → It is formed from "road" (from Old English *rād*, meaning a way or path) and "bed" (from Old English *bedd*, meaning a place to lie or rest). The word "roadbed" refers to the foundation or base on which a road is constructed, essentially the 'bed' that supports the 'road'.

Memory Tip

Think of a 'way' or 'path' ('road') that is supported by a 'place to lie' ('bed') — that's what a roadbed is, the foundation for a road.

Visually Confused Words