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单词 foil
释义

foil

See also: FOIL

English

Pronunciation

  • IPA(key): /fɔɪl/
  • Audio (US)(file)
  • Rhymes: -ɔɪl

Etymology 1

From Middle English foyle, from Middle French fueille, from Old French fueille (“plant leaf”), from Late Latin folia, the plural of folium, mistaken as a singular feminine. Doublet of folio and folium, distantly also with phyllo and phyllon.

Noun

foil (countable and uncountable, plural foils)

  1. A very thin sheet of metal.
  2. (uncountable) Thin aluminium/aluminum (or, formerly, tin) used for wrapping food.
    wrap the sandwich up in foil
  3. A thin layer of metal put between a jewel and its setting to make it seem more brilliant.
  4. (authorship, figuratively) In literature, theatre/theater, etc., a character who helps emphasize the traits of the main character and who usually acts as an opponent or antagonist, but can also serve as the sidekick of the protagonist.
    • 2022 December 20, Leigh Monson, “Puss In Boots: The Last Wish review: Antonio Banderas leads the best film yet in the Shrek franchise”, in AV Club‎:
      As Puss comes to realize his legendary status is not a substitute for interpersonal connection, his interactions with Kitty and the therapy dog start to take on a surprising amount of weight, while Goldilocks serves as a well-realized foil who has more in common with Puss that is at first apparent.
  5. (figuratively) Anything that acts by contrast to emphasise the characteristics of something.
    • a. 1587, Philippe Sidnei [i.e., Philip Sidney], “(please specify the page number)”, in Fulke Greville, Matthew Gwinne, and John Florio, editors, The Countesse of Pembrokes Arcadia [The New Arcadia], London: […] [John Windet] for William Ponsonbie, published 1590, OCLC 801077108; republished in Albert Feuillerat, editor, The Countesse of Pembrokes Arcadia (Cambridge English Classics: The Complete Works of Sir Philip Sidney; I), Cambridge, Cambridgeshire: University Press, 1912, OCLC 318419127:
      As she a black silk cap on him begun / To set, for foil of his milk-white to serve.
    • 1725-1726, William Broome, The Odyssey
      Hector has also a foil to set regard
  6. (fencing) A very thin sword with a blunted (or foiled) tip
    • 1598–1599 (first performance), William Shakespeare, “Much Adoe about Nothing”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358, [Act V, scene ii]:
      Blunt as the fencer's foils, which hit, but hurt not.
    • 1784-1810, William Mitford, History of Greece
      Socrates contended with a foil against Demosthenes with a sword.
  7. A thin, transparent plastic material on which marks are made and projected for the purposes of presentation. See transparency.
  8. (heraldry) A stylized flower or leaf.
  9. (hydrodynamics, nautical) Clipping of hydrofoil.
  10. (aerodynamics, aviation) Clipping of aerofoil/airfoil.
Synonyms
  • (thin aluminium/aluminum): aluminium foil, silver foil, silver paper, tin foil
Derived terms
Derived terms
  • aluminum foil
  • cinquefoil
  • counterfoil
  • foil stone
  • quatrefoil
  • sexfoil
  • tin foil
  • trefoil
Translations
shortened form of hydrofoil — see hydrofoil
shortened form of aerofoil/airfoil — see aerofoil

Verb

foil (third-person singular simple present foils, present participle foiling, simple past and past participle foiled)

  1. (transitive) To cover or wrap with foil.
  2. (nautical) Clipping of hydrofoil.

Etymology 2

From Middle English foilen (“spoil a scent trail by crossing it”), from Old French fouler (“tread on, trample”), ultimately from Latin fullō (“I trample, I full”).

Verb

foil (third-person singular simple present foils, present participle foiling, simple past and past participle foiled)

  1. To prevent (something) from being accomplished.
    They foiled my plans.
  2. To prevent (someone) from accomplishing something.
    I was foiled by my superior
    • 1606, C[aius, i.e., Gaius] Suetonius Tranquillus, “The Historie of Flavius Vespatianus Augustus”, in Philemon Holland, transl., The Historie of Twelve Cæsars Emperours of Rome. […], London: […] [Humphrey Lownes and George Snowdon] for Matthew Lownes, OCLC 1029684289, section 5, page 243:
      And at the field fought before Bebriacum, ere the battailes joyned, tvvo Ægles had a conflict and bickered together in all their fights: and vvhen the one of them was foyled and overcome, a third came at the very inſtant from the ſunne riſing and chaſed the Victreſſe avvay.
    • 1697, Virgil, “The Seventh Book of the Æneis”, in John Dryden, transl., The Works of Virgil: Containing His Pastorals, Georgics, and Æneis. […], London: […] Jacob Tonson, […], OCLC 403869432:
      And by mortal man at length am foil'd.
    • 1812, Lord Byron, “Canto I”, in Childe Harold’s Pilgrimage. A Romaunt, London: Printed for John Murray, […]; William Blackwood, Edinburgh; and John Cumming, Dublin; by Thomas Davison, […], OCLC 22697011, stanza LV:
      her long locks that foil the painter's power
    • 1848 November – 1850 December, William Makepeace Thackeray, chapter 28, in The History of Pendennis. […], volume (please specify |volume=I or II), London: Bradbury and Evans, […], published 1849–1850, OCLC 2057953:
      Perhaps you think you love me now but it is only for an instant, and because you are foiled.
    • 2011 December 10, David Ornstein, “Arsenal 1 - 0 Everton”, in BBC Sport‎:
      First, former Toffee Mikel Arteta sent Walcott racing clear but instead of shooting he squared towards Ramsey, who was foiled by Tony Hibbert.
    • 2017 August 20, “The Observer view on the attacks in Spain”, in The Observer‎:
      Many jihadist plots have been foiled and the security apparatus is getting better, overall, at pre-empting those who would do us ill. But, they say, the nature of the threat and the terrorists’ increasing use of low-tech, asymmetrical tactics such as hire vehicles and knives, make it all but impossible to stop every assault.
  3. To blunt; to dull; to spoil.
    • 1711 August 11 (Gregorian calendar)​, Joseph Addison, “TUESDAY, July 31, 1711”, in The Spectator, number (please specify the issue number); republished in Alexander Chalmers, editor, The Spectator; a New Edition, […], volume (please either specify the issue number or |volume=I to VI), New York, N.Y.: D[aniel] Appleton & Company, 1853, OCLC 191120697:
      they foil the scent of one another.
  4. (obsolete) To tread underfoot; to trample.
    • 1603, Richard Knolles, The Generall Historie of the Turkes
      King Richard […] caused the ensigns of Leopold to be pulled down and foiled underfoot.
    • 1596, Edmund Spenser, “Book V, Canto XXXIII”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, OCLC 960102938:
      Whom he did all to pieces breake and foyle, / In filthy durt, and left so in the loathely soyle.
Synonyms
  • (prevent from being accomplished): put the kibosh on, scupper, thwart
Translations

Noun

foil (plural foils)

  1. Failure when on the point of attainment; defeat; frustration; miscarriage.
    • 1671, John Milton, “(please specify the page)”, in Paradise Regain’d. A Poem. In IV Books. To which is Added, Samson Agonistes, London: […] J. M[acock] for John Starkey […], OCLC 228732398:
      Fame is no plant that grows on mortal foil
    • 1685, John Dryden, Threnodia Augustalis
      Nor e'er was fate so near a foil.
  2. One of the incorrect answers presented in a multiple-choice test.

Etymology 3

From French foulis.

Noun

foil (plural foils)

  1. (hunting) The track of an animal.
    • 1749, Henry Fielding, chapter IV, in The History of Tom Jones, a Foundling, volume (please specify |volume=I to VI), London: A[ndrew] Millar, […], OCLC 928184292, book VII:
      […] but after giving her a dodge, here's another b— follows me upon the foil.
Synonyms
  • (track of an animal): spoor
Translations

Etymology 4

From mnemonic acronym FOIL (“First Outside Inside Last”).

Verb

foil (third-person singular simple present foils, present participle foiling, simple past and past participle foiled)

  1. (mathematics) To expand a product of two or more algebraic expressions, typically binomials.
Translations

Etymology 5

See file.

Verb

foil (third-person singular simple present foils, present participle foiling, simple past and past participle foiled)

  1. (obsolete) To defile; to soil.

Anagrams

  • Filo, LIFO, filo, lo-fi, lofi

Old French

Alternative forms

  • feul
  • foel
  • fol
  • fueill
  • fuel
  • fuil

Etymology

From Latin folium. Compare fueille, from the plural of folium, folia.

Noun

foil m (oblique plural fouz or foilz, nominative singular fouz or foilz, nominative plural foil)

  1. leaf (green appendage of a plant which photosynthesizes)
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