1. Tin reduced to a thin leaf.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• tinsil,
• infil,
• tidfil,
• jinghpoi,
• pinfolld,
• timoloil,
• tin foil,
• tinoid,
• rinfoil,
• finfoil,
• ginfoil,
• yinfoil,
• 6infoil,
• 5infoil,
• tunfoil,
• tjnfoil,
• tknfoil,
• tonfoil,
• t9nfoil,
• tinfiol

• tin foil.

The adjective form of "tinfoil" is "tinfoil". So, both the noun and the adjective form of the word are the same.

The plural of the "tinfoil" can be the "tinfoils".

The singular of the "tinfoil" can be the "tinfoil".