smoke screen is a noun meaning "(military) screen consisting of a cloud of smoke that obscures movements". It carries 2 recorded senses.
(military) screen consisting of a cloud of smoke that obscures movements
military
an action intended to conceal or confuse or obscure
“requesting new powers of surveillance is just a smokescreen to hide their failures”
Definitions, synonyms and semantic relations for smoke screen come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.