backfired definition
backfire - a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine blowup, detonation, explosion - a violent release of energy caused by a chemical or nuclear reaction
backfire - a fire that is set intentionally in order to slow an approaching forest fire or grassfire by clearing a burned area in its path fire - the event of something burning (often destructive); they lost everything in the fire