/ Dictionary / Index T tinfoil: Meaning and Definition of Find definitions for: tin•foil Pronunciation: (tin'foil"), [key] — n. 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. See also: tinfoil (Thesaurus) tin fish ting Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language