English English Wikipedia has an article on:backblastWikipedia Etymology From back + blast. Noun backblast (plural backblasts) A dangerous blast of hot gas behind a rocket or missile when it is fired. 2008 April 21, Michael R. Gordon, “Civilians Suffer in Sadr City’s Daily Gun Battles”, in New York Times:Two Iraqi soldiers were brought in the morning after being wounded by the backblast of one of their own rocket-propelled grenades.Remove adsWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads