1the action of setting fire to something:the deliberate firing of 600 oil wells
2the discharging of a gun or other weapon:the prolonged firing caused heavy losses [count noun]:no missile firings were planned
3the baking or drying of pottery or bricks in a kiln:the colours had suffered in the firing and were dull from overheating
4the dismissal of an employee from a job:the recent firing of the head of the department [count noun]:a series of firings and resignations
the firing line
1the front line of troops in a battle.
2a situation where one is subject to criticism or blame because of one’s responsibilities or position:the referee in the firing line is an experienced official