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foil

1 foil /ˈfojəl/ verb
foils; foiled; foiling
1 foil
/ˈfojəl/
verb
foils; foiled; foiling
Britannica Dictionary definition of FOIL
[+ object]
: to prevent (someone) from doing something or achieving a goal : defeat often used as (be) foiled
: to prevent (something) from happening or being successful
2 foil /ˈfojəl/ noun
plural foils
2 foil
/ˈfojəl/
noun
plural foils
Britannica Dictionary definition of FOIL
[noncount] : a very thin and light sheet of metal
see also silver foil, tinfoil
[count] : someone or something that is different from another person or thing in a useful or appealing way usually + for or to
[count] : a sword that has a light, thin blade and that is used in the sport of fencing