a mass of dense smoke produced to conceal an area, vessel, or plane from the enemy.
something intended to disguise, conceal, or deceive; camouflage.
Origin of smoke screen
First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
military a cloud of smoke produced by artificial means to obscure movements or positions
something said or done in order to hide the truth
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