the action of setting fire to something

the deliberate firing of 600 oil wells

the discharging of a gun or other weapon

the prolonged firing caused heavy losses

no missile firings were planned

the baking or drying of pottery or bricks in a kiln

the colours had suffered in the firing and were dull from overheating

the dismissal of an employee from a job

the recent firing of the head of the department

a series of firings and resignations