Definitions:

1. a device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through noun
   • the fins of a fish act as hydrofoils
2. a piece of thin and flexible sheet metal noun
   • the photographic film was wrapped in foil
3. anything that serves by contrast to call attention to another thing's good qualities noun
   • pretty girls like plain friends as foils
4. cover or back with foil verb
   • foil mirrors
5. enhance by contrast verb
   • In this picture, the figures are foiled against the background

Synonyms:

• enhancer
• hydrofoil
• spoil
• transparency

NearBy Words:

• foiled
• foiling