(used with a singular or plural verb) something that distorts or blurs facts, figures, etc., like a magic or conjuring trick; artful deception.
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British Dictionary definitions for smoke and mirrors
irrelevant or misleading information serving to obscure the truth of a situation
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