The word "tinfoil" refers to a thin, shiny metal material made from tin. It is often used for wrapping and preserving food or for cooking purposes. Full definition
Polygon has gone the way of tinfoil hats trying to piece together everything in an effort to find Frog Fractions 2. (ericmhunter.net)
Put hens in preheated 400 degree oven for twenty minutes; cover with tinfoil tent (shiny side in, always), reduce heat to 325 and continue roasting until juices run clear. (remonline.com)
He hung his old but immaculately polished pots and skillets on a pressed - wood pegboard coated in tinfoil in his kitchen. (bookbrowse.com)