Paving goo (3)
I believe the answer is:
tar
'paving goo' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tar that I've seen before include "It paves the way" , "Sticky substance - seaman" , "Mariner, old salt" , "Thick flammable liquid" , "Old salt or liquid from coal" .)