American Dictionary

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Definition foil in American English

foil noun

noun
/fɔɪl/
Example

Wrap the cheese in foil to keep it moist.

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2

someone or something that makes another person or thing seem better or more attractive because of the differences between them

Example

The plain stone floor is a perfect foil to the highly decorated walls.

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3

a light thin sword used in the sport of fencing

Synonyms and related words
Definition foil in American English