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roadbed

American  
[rohd-bed] / ˈroʊdˌbɛd /

noun

  1. Railroads.

    1. the bed or foundation structure for the track of a railroad.

    2. the layer of ballast immediately beneath the ties of a railroad track.

  2. the material of which a road is composed.


roadbed British  
/ ˈrəʊdˌbɛd /

noun

  1. the material used to make a road

  2. a layer of ballast that supports the sleepers of a railway track

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of roadbed

1830–40. road + bed

Vocabulary lists containing roadbed

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

With crews still working to clear debris from under the freeway, the wooden structure that will support the roadbed around the damaged columns is already being constructed.

From Los Angeles Times • Nov. 16, 2023

She believes raising the roadbed and installing a small wildlife underpass beneath it would significantly reduce the number of newts that die on Chileno Valley Road.

From New York Times • Jan. 24, 2023

Reuters: How long before wireless charging of electric vehicle batteries will become a reality, whether it's through the roadbed or solar panels on the vehicle or some other means?

From Reuters • Aug. 24, 2021

He loved the sound the tires of the family car made as they rolled over the concrete roadbed of the Chesapeake Bay Bridge Tunnel.

From Washington Post • Sep. 28, 2020

Instantly they gave chase, drove it across the tracks and there filled their pockets with granite stones from the roadbed.

From "Cannery Row" by John Steinbeck

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