Crossword Genius

Putty-like substance (6)

Ross

I believe the answer is:

mastic

(Other definitions for mastic that I've seen before include "Gum from trees" , "Mouldable cement" , "Putty-like cement used as adhesive or filler" , "Resin used in varnishes" , "Mac, sit and produce a gum resin" .)

I've seen this clue in The Mirror and the Evening Standard.
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.