Meaning of tinfoil

tin•foil

Pronunciation: (tin'foil"), [key]
— n.
  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,
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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