tinfoil

noun

tin·​foil ˈtin-ˌfȯi(-ə)l How to pronounce tinfoil (audio)
: a paper-thin metal sheeting usually of aluminum or tin-lead alloy

Examples of tinfoil in a Sentence

Wrap the leftover food in tinfoil.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Their accounts bore some similarities to a 2009 incident in which a practitioner was charged by federal prosecutors with smuggling more than $100,000 in cash, some wrapped in tinfoil, through customs at Kennedy International Airport. Michael Rothfeld, New York Times, 29 Dec. 2024 Once cooled, the pie is ready to be wrapped tightly with plastic wrap and/or tinfoil before being frozen. Stacey Lastoe, Southern Living, 25 Nov. 2024 This August, Beijing responded to Trump’s proposed tinfoil duties by threatening to restrict soybean imports. Jeffrey Kucik, Foreign Affairs, 10 Oct. 2017 If breast is getting too dark toward the end of cooking, place a piece of tinfoil over top to shield it. Christine Rousselle, Fox News, 25 Nov. 2024 See all Example Sentences for tinfoil 

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of tinfoil was in the 14th century

Dictionary Entries Near tinfoil

Cite this Entry

“Tinfoil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tinfoil. Accessed 21 Jan. 2025.

Kids Definition

tinfoil

noun
tin·​foil ˈtin-ˌfȯil How to pronounce tinfoil (audio)
: a thin metal sheeting usually of aluminum or an alloy of tin and lead

More from Merriam-Webster on tinfoil

Last Updated: - Updated example sentences
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