Third-person singular simple present indicative form of fight fire with fire

(firefighting) A vehicle used by firefighters to pump water to fight a fire. Typically, a fire engine carries a supply of water and has the ability to connect to an external water supply.

(transitive) To ignite. / (intransitive) Of an engine or similar, to start. / (transitive, computing, informal) To launch; to run. / (transitive) To excite; to infuse with energy.

Weapons fire from allied or friendly forces, as opposed to fire coming from enemy forces or enemy fire.

(transitive) To cause to begin to burn. / (figuratively, transitive) To arouse passionate feelings in.

A fire, stove or heater powered by electricity.

An organized practice to prepare occupants of an office, school or other public building for evacuation in the event of a fire.

(military) Fire whose direction is not perpendicular to the line fired at.

The act of watching for the occurrence of fires, for example during wartime bombing raids or in forested areas in hot and dry conditions.

A rite of passage through the survival or success of a crisis or ordeal.