foil

/fษ”ษชl/
noun
  1. 1

    A very thin sheet of metal.

  2. 2

    Thin aluminium/aluminum (or, formerly, tin) used for wrapping food.

    โ€œwrap the sandwich up in foilโ€

  3. 3

    A thin layer of metal put between a jewel and its setting to make it seem more brilliant.

  4. 4

    (authorship) 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.

  5. 5

    Anything that acts by contrast to emphasise the characteristics of something.

  6. 6

    A very thin sword with a blunted (or foiled) tip

  7. 7

    A thin, transparent plastic material on which marks are made and projected for the purposes of presentation. See transparency.

  8. 8

    A stylized flower or leaf.

  9. 9

    A hydrofoil.

  10. 10

    An aerofoil/airfoil.

verb
  1. 1

    To cover or wrap with foil.

noun
  1. 1

    Failure when on the point of attainment; defeat; frustration; miscarriage.

  2. 2

    One of the incorrect answers presented in a multiple-choice test.

verb
  1. 1

    To prevent (something) from being accomplished.

    โ€œI was foiled by my superiorโ€

  2. 2

    To prevent (someone) from accomplishing something.

    โ€œThey foiled my plans.โ€

  3. 3

    To blunt; to dull; to spoil.

    โ€œto foil the scent in huntingโ€

  4. 4

    To tread underfoot; to trample.

noun
  1. 1

    The track of an animal.

Synonyms

verb
  1. 1

    To expand a product of two or more algebraic expressions, typically binomials.

verb
  1. 1

    To defile; to soil.

Source: https://en.wiktionary.org/wiki/foil