noun \ˈtin-ˌfi(-ə)l\

: a thin sheet of shiny metal that is used especially for cooking or storing food

Full Definition of TINFOIL

:  a paper-thin metal sheeting usually of aluminum or tin-lead alloy

Examples of TINFOIL

  1. Wrap the leftover food in tinfoil.

First Known Use of TINFOIL

14th century


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