Main Entry:

road·bed

Pronunciation:

\ˈrōd-ˌbed\

Function:

noun

Date:

circa 1840

1 a: the bed on which the ties, rails, and ballast of a railroad rest b: the ballast or the upper surface of the ballast on which the ties rest2 a: the earth foundation of a road prepared for surfacing b: the part of the surface of a road traveled by vehicles