Tin (3)

'tin' is the definition.
(I know that tin can be written as can)
This is the entire clue.
(Other definitions for can that I've seen before include "Tin; be able to" , "has power" , "SECOND PART OF 10" , "let go in the US" , "Container (e.g. beer)" .)
(Other definitions for foil that I've seen before include "Repulse" , "Tharwt with Sword" , "Frustrate with fencing sword" , "blunt weapon" , "Fencing rapier" .)