Crossword Genius

Driveway-patching gunk (3)

Ross

I believe the answer is:

tar

(Other definitions for tar that I've seen before include "Pitch; sailor" , "'Thick, dark, sticky liquid (3)'" , "Black substance, used on roads" , "Naval man" , "Road-dressing for a sailor?" .)

I've seen this clue in the LA Times.
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