There are a few different ways to use the word "drill." As a verb, "drill" means to repeat an action or repeat information so that it is memorized and learned.
The soccer coach drills his players on how to pass the ball.
The teacher drilled her students on spelling.
Firefighters are drilled on how to use CPR when a person isn’t breathing.
To drill, also means to put a hole into something.
Oil companies drill for oil.
A dentist drills decayed material out of a tooth.
A carpenter drills holes through wood when working on a construction project.
This word can also be used as a noun.
A power drill makes holes in wood and other hard materials.
A dental drill is used to removed decayed material from a tooth.
Oil companies use a drill to punch a hole through the surface of the Earth. When oil is found, it’s extracted with a pump.
Military exercises are also known as drills. A drill prepares a soldier for combat.
Schools have fire drills, tornado drills, and other emergency drills to practice for dangerous situations.