On the road (4)
I believe the answer is:
away
'on the road' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for away that I've seen before include "Elsewhere" , "Chelsea's game at Old Trafford is" , "Not at home, somewhere else" , "United win at Chelsea" , "SECOND PART OF 4 DOWN" .)