roadbed
road·bed
noun
1.
a bed supporting a road
Origin
From road + bed.
Related words
Broader terms
Parts
Part of
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.