foil Meaning, definition in Cambridge English Dictionary
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Meaning of "foil" - English Dictionary

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foilnoun

uk   us   /fɔɪl/

foil noun (METAL SHEET)

[U] a very thin sheet of metal, especially used to wrap food in to keep it fresh: tin foilUK aluminium foil

foil noun (COMPARISON)

[C] something or someone that makes another's good or bad qualities more noticeable: The older, cynical character in the play is the perfect foil for the innocent William.

foil noun (SWORD)

[C] a thin, light sword used in the sport of fencing

foilverb [T]

uk   us   /fɔɪl/
to prevent someone or something from being successful: The prisoners' attempt to escape was foiled at the last minute when police received a tip-off.
(Definition of foil from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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