As a verb:
* The construction worker drilled holes in the wall for the new shelves.
* The teacher drilled the students on their multiplication facts.
* The team drilled their plays before the big game.
* The dentist drilled a cavity in my tooth.
As a noun:
* I need to buy a new drill for my DIY project.
* The military conducted a fire drill to practice emergency procedures.
* The drill sergeant put the recruits through a grueling drill.
* The dentist used a drill to fix my tooth.
In a figurative sense:
* The company's new marketing strategy was just a drill to test the market.
* He drilled into the details of the contract, making sure everything was clear.
The meaning of "drill" can change depending on the context. Think about what you are trying to say and choose the appropriate meaning.