Perhaps the evergreen part, by the way (5)
I believe the answer is:
verge
'way' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for verge that I've seen before include "Side of road" , "Border - edge" , "Grass edge to road" , "Margin or brink" , "Margin, edge" .)