Fir"ing, n. 1. The act of discharging firearms.

2. The mode of introducing fuel into the furnace and working it. Knight.

3. The application of fire, or of a cautery. Dunglison.

4. The process of partly vitrifying pottery by exposing it to intense heat in a kiln.

5. Fuel; firewood or coal. [Obs.] Mortimer.

• the process of applying heat or fire, especially to clay etc to produce pottery
  
• the fuel for a fire
  
• the discharge of a gun or other weapon
  
• the dismissal of someone from a job