tinfoil
noun
tin·foil
ˈtin-ˌfȯi(-ə)l 
: 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
Her rainbow-and-tinfoil outfit on the runway is another one that is just barely safe.
—
Jason P. Frank, Vulture, 3 Jan. 2026
Slice the top off an orange—jack-o’-lantern style—and eat the fruit with a spoon, then fill the peel with cake batter, wrap it in tinfoil, and bake it in coals.
—The Editors, Outside, 29 Dec. 2025
Smaller tinfoil pans became my secret weapon.
—Jessica Safavimehr, Southern Living, 25 Nov. 2025
But all of us put the tinfoil hat on from time to time.
—Stepheny Price, FOXNews.com, 30 Oct. 2025
See All Example Sentences for tinfoil
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Jason P. Frank, Vulture, 3 Jan. 2026
Slice the top off an orange—jack-o’-lantern style—and eat the fruit with a spoon, then fill the peel with cake batter, wrap it in tinfoil, and bake it in coals.
—The Editors, Outside, 29 Dec. 2025
Smaller tinfoil pans became my secret weapon.
—Jessica Safavimehr, Southern Living, 25 Nov. 2025
But all of us put the tinfoil hat on from time to time.
—Stepheny Price, FOXNews.com, 30 Oct. 2025
See All Example Sentences for tinfoil
Cite this Entry
“Tinfoil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tinfoil. Accessed 9 Jan. 2026.
Copy CitationKids Definition
tinfoil
noun
tin·foil
ˈtin-ˌfȯil
: a thin metal sheeting usually of aluminum or an alloy of tin and lead
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