Back-fire
Pronunciation : Back"-fire`
Part of Speech : v.
Definition : 1. (Engin.)
Defn: To have or experience a back fire or back fires; -- said of an internal-combustion engine.
2. Of a Bunsen or similar air-fed burner, to light so that the flame proceeds from the internal gas jet instead of from the external jet of mixed gas and air. -- Back"-fir`ing, n.
i.
Source : Webster's Unabridged Dictionary, 1913