Foil

The Simple English Wiktionary has a definition for: foil.

Foil may refer to:

  • Foil (metal), a thin sheet of metal
  • Foil (fencing), a sword without a sharp point
  • Foil (fluid mechanics), a shape that creates lift when moving
    • Airfoil, a foil that creates lift in air
    • Hydrofoil, a foil that creates lift in water
  • Foil (narrative), a character in a story that contrasts with another character
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