Definition of "Drill" :

noun: (military) the training of soldiers to march (as in ceremonial parades) or to perform the manual of arms

noun: systematic training by multiple repetitions

noun: similar to the mandrill but smaller and less brightly colored

noun: a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows)

verb: train in the military, e.g., in the use of weapons

verb: undergo military training or do military exercises

verb: learn by repetition

"We drilled French verbs every day."

verb: teach by repetition

verb: make a hole, especially with a pointed power or hand tool

"Don't drill here, there's a gas pipe."