Drill
Drill has several different meanings:

Tools
 A drilling rig, a mechanical device used to drill deep holes in the ground
 A laser drill, a common operating apparatus in terraforming
 A micro-optic drill, a small hand-held device
 A phaser drill, a device employing ship board phaser technology
 A pulse drill, a device used for mining
 A trans-sonic drill, also used for mining

Educational sessions
 A transpo drill, a type of activity for personnel on the  in the 2250s
 A training drill, an activity for crewmembers to develop their skills, often followed with an evaluation report