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Definition of roadbed

roadbed

/ˈroʊd.bɛd/
road · bed
Plural:roadbeds
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roadbed Lexical Profile

roadbed Game Scores & Validity

• noun

1

North American The prepared earth foundation or underlying layer of gravel, crushed stone, and ballast upon which the tracks of a railroad or the pavement of a highway are laid.

Example

"Engineers inspected the gravel roadbed to ensure the soil could support the weight of the new high-speed rail line."

2

North American The entire surface of a road or highway between the curbs or shoulders on which vehicles travel.

Example

"Heavy overnight rain flooded the lower section of the roadbed, forcing commuters to take an alternate route."

Synonyms
View all synonyms for roadbed

• Nearby Words

riyadh
roach
road
roadbed
roadblock
roadbuilding
roadhog

Cite this Entry

Wordmom. (2026). Definition of Roadbed. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/roadbed
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