Crossword Genius

Driveway repair goo (3)

Ross

I believe the answer is:

tar

(Other definitions for tar that I've seen before include "Informal sailor or road-surfacing material" , "Viscous liquid; sailor" , "Slang sailor or road surfacing material" , "Product of smoking cigarettes" , "Product of burning tobacco" .)

I've seen this clue in the USA Today.
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