foil
n//fɔɪl//folie, aluminiumfolie, florett, omintetgöra, kullkasta
A very thin sheet of metal.
(mostly, uncountable) Thin aluminium/aluminum (or, formerly, tin) used for wrapping food.
(authorship, figuratively) In literature, theatre/theater, etc., a character who helps emphasize the traits of the main character and who usually acts as an opponent or antagonist, but can also serve as the sidekick of the protagonist.
(fencing) A very thin sword with a blunted (or foiled) tip