To discharge a gun or other weapon. The soldier was ordered to fire at the target.
To dismiss someone from their job. The company decided to fire the employee for misconduct.
To ignite or cause to start burning. He used a match to fire the kindling in the fireplace.
To stimulate or excite someone. The coach's speech fired up the team before the big game.
To propel or launch something with force. The catapult was used to fire stones over the castle walls.
To bake or harden (ceramic or pottery) by subjecting it to high heat in a kiln. The artisan fired the clay vases at a high temperature to strengthen them.