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 rest
2 a : the earth foundation of a road prepared for surfacing b : the part of the surface of a road traveled by vehicles