The phrase "little foil" refers to someone or something that serves as a contrast or challenge to another person or thing. It implies that the "little foil" brings out different qualities or highlights the differences in someone or something.
Sentences with «little foil»
The paper ornament and little foils tree look more like decorations for a New Years party and cheapen the rest. (dimplesandtangles.com)
The Whitby, Ont., firm makes specialty paper — everything from roofing underlay to those little foil pouches that hold wet wipes — for construction, packaging and industrial businesses. (canadianbusiness.com)
I like that it has convenient packaging with a pour spout - no more struggling with the little foil pull tab that always rips. (eatpicks.com)