firing

noun

1
the act of discharging a gun
2
the termination of someone's employment (leaving them free to depart)
3
the act of setting something on fire
4
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

Also useful for “firing”:Unscrambler— Rearrange the letters in “firing”