Machinery, Building Trades .

a shaftlike tool with two or more cutting edges for making holes in firm materials, esp. by rotation.

a tool, esp. a hand tool, for holding and operating such a tool.

Military .

training in formal marching or other precise military or naval movements.

an exercise in such training

gun drill.

any strict, methodical, repetitive, or mechanical training, instruction, or exercise

a spelling drill.

the correct or customary manner of proceeding.

Also called snail bore. a gastropod, Urosalpinx cinera, that bores holes in shellfish, as oysters.

to pierce or bore a hole in (something).

to make (a hole) by boring.

Military . to instruct and exercise in formation marching and movement, in the carrying of arms during formal marching, and in the formal handling of arms for ceremonies and guard work.

to impart (knowledge) by strict training, discipline, or repetition.

to pierce or bore something with or as with a drill.

to go through exercise in military or other training.