What is the meaning of foiling?

noun

• An act of hindering someone's plans or efforts.
  • synonyms: frustration, thwarting

verb

• Enhance by contrast.
  • usage: "In this picture, the figures are foiled against the background"
  • synonyms: foil
• Hinder or prevent (the efforts, plans, or desires) of.
  • usage: "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent"
  • synonyms: thwart, queer, spoil, scotch, foil, cross, frustrate, baffle, bilk
• Cover or back with foil.
  • usage: "foil mirrors"
  • synonyms: foil