What is to render (an effort or attempt) vain or nugatory; to baffle; to outwit; to balk; to frustrate; to defeat. And by foiled. Dryden. Her long locks that foil the painter's power. Byron called?

foil — To render (an effort or attempt) vain or nugatory; to baffle; to outwit; to balk; to frustrate; to defeat. And by foiled. Dryden. Her long locks that foil the painter's power. Byron. (Webster's 1913.)

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