Foil

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Foil may refer to:

  • Metal leaf, a thin sheet of metal
  • Aluminium foil, a type of wrapping for food
  • Plastic foil, a thin layer of plastics
  • Foil (fencing), one of the three weapons used in modern fencing
  • Foil (literature), a character who emphasizes the traits of a main character
  • Comedic foil, (or comic foil), is the straight man in a comedy team.
  • Foil (fluid mechanics), a type of wing or blade used to provide lift
  • Foil (papermaking), a type of ving under the wire in the wire section of a paper machine creating a vacuum pulse to eliminate water from the stock (fibre/water slurry).
  • Foil bearing, a type of fluid bearing
  • FOIL (acronym for Film Over Incandescent Light), an image projection technique
  • FOIL rule {acronym for First Outer Inner Last}, used to make a quadratic trinomial in Algebra

In aeronautics:

  • Airfoil, used on aircraft
  • Parafoil, a nonrigid airfoil, inflated during use

In art:

In navigation:

  • Hydrofoil, a type of boat using foils designed for water
  • Bruce foil, a foil used on an outrigger to prevent a boat from heeling
  • Centreboard, a movable keel that functions as a foil
  • Foilboard, a surfboard using a hydrofoil

Foil may also be:

In other languages