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Definition of “foil” - English Dictionary

"foil" in American English

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foilnoun

 us   /fɔɪl/
  • foil noun (METAL SHEET)

[U] a very thin sheet of metal, used esp. for wrapping food: aluminum foil
  • foil noun (COMPARISON)

[C] someone or something that makes another’s good or bad qualities all the more noticeable: The older, cynical character in the play is the perfect foil for the innocent William.
  • foil noun (BLADE)

[C] a thin, light weapon with a long blade used in the sport of fencing

foilverb [T]

 us   /fɔɪl/
  • foil verb [T] (PREVENT)

to prevent someone or something from being successful: An attempted coup against the country’s military ruler was foiled yesterday.

FOILnoun [U]

 us   /fɔɪl/
mathematics abbreviation for first, outer, inner, last, the rule for multiplying two binomials (= statements that have two numbers or symbols each)
(Definition of foil from the Cambridge Academic Content Dictionary © Cambridge University Press)







"foil" in British English

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foilnoun

uk   /fɔɪl/  us   /fɔɪl/

foilverb [T]

uk   /fɔɪl/  us   /fɔɪl/
(Definition of foil from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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