Crossword Genius

A coating of iron oxide (4)

Ross

I believe the answer is:

rust

(Other definitions for rust that I've seen before include "Corrode" , "Fungal plant disease" , "Reddish-brown coating formed on metal by damp" , "Reddish-brown colour" , "deteriorate" .)

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.