Thin sheet of metal (4)

I believe the answer is:

foil

(Other definitions for foil that I've seen before include "Frustrate - light sword" , "Thin metal - sword" , "thin plate of metal" , "metal used in > sword" , "Check" .)

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.