Definitions
1.nounA very thin sheet of metal.
2.nounThin aluminium/aluminum (or, formerly, tin) used for wrapping food."wrap the sandwich up in foil"
3.nounA thin layer of metal put between a jewel and its setting to make it seem more brilliant.
4.noun(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.nounAnything that acts by contrast to emphasise the characteristics of something.
6.nounA very thin sword with a blunted (or foiled) tip
7.nounA thin, transparent plastic material on which marks are made and projected for the purposes of presentation. See transparency.
8.nounA stylized flower or leaf.
9.nounA hydrofoil.
10.nounAn aerofoil/airfoil.
11.verbTo cover or wrap with foil.
12.nounFailure when on the point of attainment; defeat; frustration; miscarriage.
13.nounOne of the incorrect answers presented in a multiple-choice test.
14.verbTo prevent (something) from being accomplished."I was foiled by my superior"
15.verbTo prevent (someone) from accomplishing something."They foiled my plans."
16.verbTo blunt; to dull; to spoil."to foil the scent in hunting"
17.verbTo tread underfoot; to trample.
18.nounThe track of an animal.
19.verbTo expand a product of two or more algebraic expressions, typically binomials.
20.verbTo defile; to soil.