Light slender flexible sword tipped by a button (4)

I believe the answer is:

foil

(Other definitions for foil that I've seen before include "Frustrate; kitchen wrap" , "Queer" , "Fencing weapon; outwit" , "Parry" , "Blunt sword with a button on the end" .)

I've seen this clue in The Mirror.

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.