From The Collaborative International Dictionary of English v.0.48 :
cartroad \cartroad\ n.
any road or path affording passage especially a rough one.
Syn: track, cart track.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) :
cartroad
n 1: any road or path affording passage especially a rough one
[syn: track, cart track, cartroad]