Back"-fire`, v. i.
1.
(
Engin.)
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.
© Webster 1913.