Highway or street (4)
I believe the answer is:
road
This clue is a double definition.
'highway' is the first definition.
(highway is a type of road)
'street' is the second definition.
(I know that street can be written as road)
(Other definitions for road that I've seen before include "course" , "Parting guests used to take 'one for the --'" , "Way to achieving a particular outcome" , "For place to anchor" , "Mine passage; way" .)