Sailor with coat that's found on road (6)
I believe the answer is:
tarmac
'found on road' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'sailor with coat' is the wordplay.
'sailor' becomes 'tar' (slang term for a sailor).
'with' means one lot of letters go next to another.
'coat' becomes 'mac' (mac is a kind of coat).
'tar'+'mac'='TARMAC'
'that's' is the link.
Can you help me to learn more?
(Other definitions for tarmac that I've seen before include "Road surface material of tar and stone" , "short runway, perhaps" , "Topping" , "Airport runway(s)" , "Airport runway surface" .)