- Foil
- Foil Foil, n. [OE. foil leaf, OF. foil, fuil, fueil, foille,
fueille, F. feuille, fr. L. folium, pl. folia; akin to Gr. ?,
and perh. to E. blade. Cf. {Foliage}, {Folio}.]
1. A leaf or very thin sheet of metal; as, brass foil; tin
foil; gold foil.
[1913 Webster]
2. (Jewelry) A thin leaf of sheet copper silvered and burnished, and afterwards coated with transparent colors mixed with isinglass; -- employed by jewelers to give color or brilliancy to pastes and inferior stones. --Ure. [1913 Webster]
3. Anything that serves by contrast of color or quality to adorn or set off another thing to advantage. [1913 Webster]
As she a black silk cap on him began To set, for foil of his milk-white to serve. --Sir P. Sidney. [1913 Webster]
Hector has a foil to set him off. --Broome. [1913 Webster]
4. A thin coat of tin, with quicksilver, laid on the back of a looking-glass, to cause reflection. [1913 Webster]
5. (Arch.) The space between the cusps in Gothic architecture; a rounded or leaflike ornament, in windows, niches, etc. A group of foils is called trefoil, quatrefoil, quinquefoil, etc., according to the number of arcs of which it is composed. [1913 Webster]
{Foil stone}, an imitation of a jewel or precious stone. [1913 Webster]
The Collaborative International Dictionary of English. 2000.