- (Metallurgy) metal in the form of very thin sheets: gold foil; tin foil. 2. (Ceramics) the thin metallic sheet forming the backing of a mirror 3. (Jewellery) a thin leaf of shiny metal set under a gemstone to add brightness or colour
frustrate, thwart, foil, baffle, balk mean to check or defeat another's plan or block achievement of a goal. frustrate implies making vain or ineffectual all efforts however vigorous or persistent.
FOIL definition: 1. a very thin sheet of metal, especially used to wrap food in to keep it fresh: 2. a piece of a…. Learn more.
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foil (third-person singular simple present foils, present participle foiling, simple past and past participle foiled) To prevent (something) from being accomplished.
Definition of foil noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
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