definition of
firing

[1] #1 firing n. [fire] 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". wn

[2] #2 firing n. [discharge, firing off] the act of discharging a gun. wn

[3] #3 firing n. [ignition, lighting, kindling, inflammation] the act of setting something on fire. wn

[4] #4 firing n. [dismissal, dismission, discharge, liberation, release, sack, sacking] the termination of someone's employment (leaving them free to depart). wn