smoke screen

English Thesaurus

1. an action intended to conceal or confuse or obscure (noun.act)

hypernym	:	concealing, concealment, hiding,
definition	:	the activity of keeping something secret (noun.act)

2. (military) screen consisting of a cloud of smoke that obscures movements (noun.artifact)

hypernym	:	screen,
definition	:	a protective covering consisting of netting; can be mounted in a frame (noun.artifact)

domain category	:	armed forces, armed services, military, military machine, war machine,
definition	:	the military forces of a nation (noun.group)