Definition of fire drills:
(n) :
An organized practice to prepare occupants of an office, school or other public building for evacuation in the event of a fire.
(n) :
(idiomatic, US) Any pointless, unproductive, useless, or chaotic activity.
(n) :
A fire-starting tool consisting of a wooden rod and some primitive means of rapidly rotating the rod on a flat surface like a drill until tinder can be ignited.