Crossword Genius

Furnace residue (7)

Ross

I believe the answer is:

clinker

(Other definitions for clinker that I've seen before include "Fragments left after a fire" , "Furnace slag" , "Stony residue from burnt coal" , "Stony residue from a furnace" .)

I've seen this clue in The Independent.
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.