Crossword Genius

Tar derivative (8)

Ross

I believe the answer is:

creosote

(Other definitions for creosote that I've seen before include "Dark oily liquid, preservative for wood" , "Oily liquid preservative -- eco-store (anag)" , "Oily, smelly wood preservative" , "Wood preservative oil" , "'Dark oily liquid, preserves wood (8)'" .)

I've seen this clue in the Sydney Morning Herald.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.