Crossword Genius

Organic sealant (3)

Ross

I believe the answer is:

tar

'organic sealant' 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 "Harmful tobacco residue" , "prepare for feathers?" , "A sailor; a preservative" , "Dark liquid used on roads" , "Tobacco residue; sailor" .)

I've seen this clue in the New York Times, the Newsday and the Newsday.com.
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