Foil

a piece of thin and flexible sheet metal

anything that serves by contrast to call attention to another thing's good qualities

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

picture consisting of a positive photograph or drawing on a transparent base

a light slender flexible sword tipped by a button

enhance by contrast

hinder or prevent (the efforts, plans, or desires) of

cover or back with foil