*Toll road (8)
I believe the answer is:
turnpike
'toll road' is the definition.
(I know that toll road can be written as turnpike)
This is all the clue.
(Other definitions for turnpike that I've seen before include "Toll gate" , "Toll gate/road" , "Toll road (hist.)" , "Old barrier" , "Old toll-gate, or new road with toll stations" .)