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tinfoil

[tin-foil] /ˈtɪnˌfɔɪl/
noun
1.
tin, or an alloy of tin and lead, in the form of a thin sheet, much used as a wrapping for drugs, foods, tobacco, etc.
Also called, British, silver paper.
Origin of tinfoil
late Middle English
1425-1475
First recorded in 1425-75, tinfoil is from the late Middle English word tynfoile. See tin, foil2
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British Dictionary definitions for tinfoil

tinfoil

/ˈtɪnˌfɔɪl/
noun
1.
thin foil made of tin or an alloy of tin and lead
2.
thin foil made of aluminium; used for wrapping foodstuffs
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for tinfoil
n.

late 15c., from tin (n.) + foil (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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