firing

nouns

the act of firing weapons or artillery at an enemy
"hold your fire until you can see the whites of their eyes"; "they retreated in the face of withering enemy fire"
fire, firing
is derived from
fire
the act of discharging a gun
discharge, firing, firing off
is derived from
fire
the act of setting something on fire
firing, ignition, inflammation, kindling, lighting
the termination of someone's employment (leaving them free to depart)
discharge, dismissal, dismission, firing, liberation, release, sack, sacking
is derived from
fire