backfire (n.)

  1. the backward escape of gases and unburned gunpowder after a gun is fired

    [ Syn: blowback ]

  2. a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine

  3. a fire that is set intentionally in order to slow an approaching forest fire or grassfire by clearing a burned area in its path

  4. a miscalculation that recoils on its maker

    [ Syn: boomerang ]

    backfire (v.)

  1. come back to the originator of an action with an undesired effect; Your comments may backfire and cause you a lot of trouble

    [ Syn: backlash , recoil ]

  2. emit a loud noise as a result of undergoing a backfire; My old car backfires all the time'

  3. set a controlled fire to halt an advancing forest to prairie fire

The dictionary is based on the WordNet Electronic Lexical Database.
WordNet 3.0 Copyright 2011 by Princeton University. All rights reserved.