1. [ noun ] a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine
Related terms: explosion backblast
2. [ verb ] set a controlled fire to halt an advancing forest to prairie fire
Related terms: burn
3. [ verb ] emit a loud noise as a result of undergoing a backfire

"My old car backfires all the time"

Related terms: make_noise
4. [ verb ] have an unexpected and undesired effect
Synonyms: backlash

"Your comments may backfire and cause you a lot of trouble"

Related terms: react backlash
5. [ noun ] a miscalculation that recoils on its maker
Synonyms: boomerang
Related terms: miscalculation boomerang
Similar spelling:   bacciferous