Definitions for "backfire"
A fire started ahead of a forest or prairie fire to burn only against the wind, so that when the two fires meet both must go out for lack of fuel.
A premature explosion in the cylinder of a gas or oil engine during the exhaust or the compression stroke, tending to drive the piston in a direction reverse to that in which it should travel; also called a knock or ping.
an explosion in the exhaust passages of an internal combustion engine.
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.
Flashback of flame through the burner venturi causing the gas to burn at the orifice.
Retrogression of the flame into the blowpipe neck or body with rapid self extinction.
a miscalculation that recoils on its maker
A dual reflector feed system of undefined geometry.
have an unexpected and undesired effect; "Your comments may backfire and cause you a lot of trouble"
A weapon that shoots out the back of your ship. This weapon may be obtained through a power-up, but sometimes is present as a default secondary weapon.