Street or highway (4)
I believe the answer is:
road
I believe this is a double definition.
'street' is the first definition.
(I've seen this before)
'highway' is the second definition.
(highway is a type of road)
(Other definitions for road that I've seen before include "Street" , "Abbey -, Beatles album" , "'The . . . . to hell is paved with good intentions'" , "Route travelled by sea" , "course" .)