Drill vs. Trepanation

Drillverb

(transitive) To create (a hole) by removing material with a drill tool.

‘Drill a small hole to start tmhe screw in the right direction.’;

Trepanationnoun

The practice of drilling a hole in the skull as a physical, mental, or spiritual treatment.

Drillverb

(intransitive) To practice, especially in (or as in) a military context.

‘They drilled daily to learn the routine exactly.’;

Drillverb

(ergative) To cause to drill practice; to train in military arts.

‘The sergeant was up by 6:00 every morning, drilling his troops.’;

Drillverb

(transitive) To repeat an idea frequently in order to encourage someone to remember it.

‘The instructor drilled into us the importance of reading the instructions.’;

Drillverb

(intransitive) To investigate or examine something in more detail or at a different level

‘Drill deeper and you may find the underlying assumptions faulty.’;

Drillverb

(transitive) To hit or kick with a lot of power.

Drillverb

(baseball) To hit someone with a pitch, especially in an intentional context.

Drillverb

To have sexual intercourse with; to penetrate.

Drillverb

(transitive) To cause to flow in drills or rills or by trickling; to drain by trickling.

‘waters drilled through a sandy stratum’;

Drillverb

(transitive) To sow (seeds) by dribbling them along a furrow or in a row.

Drillverb

To entice or allure; to decoy; with on.

Drillverb

To cause to slip or waste away by degrees.

Drillnoun

A tool used to remove material so as to create a hole, typically by plunging a rotating cutting bit into a stationary workpiece.

‘Wear safety glasses when operating an electric drill.’;

Drillnoun

The portion of a drilling tool that drives the bit.

‘Use a drill with a wire brush to remove any rust or buildup.’;

Drillnoun

An agricultural implement for making holes for sowing seed, and sometimes so formed as to contain seeds and drop them into the hole made.

Drillnoun

A light furrow or channel made to put seed into, when sowing.

Drillnoun

A row of seed sown in a furrow.

Drillnoun

An activity done as an exercise or practice (especially a military exercise), particularly in preparation for some possible future event or occurrence.

‘Regular fire drills can ensure that everyone knows how to exit safely in an emergency.’;

Drillnoun

(obsolete) A small trickling stream; a rill.

Drillnoun

Any of several molluscs, of the genus Urosalpinx, especially the oyster drill (Urosalpinx cinerea), that drill holes in the shells of other animals.

Drillnoun

A style of trap music with gritty, violent lyrics, originating on the South Side of Chicago.

Drillnoun

An Old World monkey of West Africa, Mandrillus leucophaeus, similar in appearance to the mandrill, but lacking the colorful face.

Drillnoun

A strong, durable cotton fabric with a strong bias (diagonal) in the weave.

Drillverb

To pierce or bore with a drill, or a with a drill; to perforate; as, to drill a hole into a rock; to drill a piece of metal.

Drillverb

To train in the military art; to exercise diligently, as soldiers, in military evolutions and exercises; hence, to instruct thoroughly in the rudiments of any art or branch of knowledge; to discipline.

‘He [Frederic the Great] drilled his people, as he drilled his grenadiers.’;

Drillverb

To practice an exercise or exercises; to train one's self.

Drillverb

To cause to flow in drills or rills or by trickling; to drain by trickling; as, waters drilled through a sandy stratum.

Drillverb

To sow, as seeds, by dribbling them along a furrow or in a row, like a trickling rill of water.

Drillverb

To entice; to allure from step; to decoy; - with on.

‘See drilled him on to five-fifty.’;

Drillverb

To cause to slip or waste away by degrees.

‘This accident hath drilled away the whole summer.’;

Drillverb

To trickle.

Drillverb

To sow in drills.

Drillnoun

An instrument with an edged or pointed end used for making holes in hard substances; strictly, a tool that cuts with its end, by revolving, as in drilling metals, or by a succession of blows, as in drilling stone; also, a drill press.

Drillnoun

The act or exercise of training soldiers in the military art, as in the manual of arms, in the execution of evolutions, and the like; hence, diligent and strict instruction and exercise in the rudiments and methods of any business; a kind or method of military exercises; as, infantry drill; battalion drill; artillery drill.

Drillnoun

Any exercise, physical or mental, enforced with regularity and by constant repetition; as, a severe drill in Latin grammar.

Drillnoun

A marine gastropod, of several species, which kills oysters and other bivalves by drilling holes through the shell. The most destructive kind is Urosalpinx cinerea.

Drillnoun

A small trickling stream; a rill.

‘Springs through the pleasant meadows pour their drills.’;

Drillnoun

An implement for making holes for sowing seed, and sometimes so formed as to contain seeds and drop them into the hole made.

Drillnoun

A large African baboon (Cynocephalus leucophæus).

Drillnoun

Same as Drilling.

Drillnoun

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

Drillnoun

similar to the mandrill but smaller and less brightly colored

Drillnoun

systematic training by multiple repetitions;

‘practice makes perfect’;

Drillnoun

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

Drillverb

make a hole with a pointed power or hand tool;

‘don't drill here, there's a gas pipe’; ‘drill a hole into the wall’; ‘drill for oil’;

Drillverb

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

Drillverb

learn by repetition;

‘We drilled French verbs every day’; ‘Pianists practice scales’;

Drillverb

teach by repetition

Drillverb

undergo military training or do military exercises

Drillnoun

a tool or machine with a rotating cutting tip or reciprocating hammer or chisel, used for making holes.

Drillnoun

a tool with a rotating tip used by a dentist for cutting away part of a tooth before filling it.

Drillnoun

instruction or training in military exercises

‘parade-ground drill’;

Drillnoun

intensive instruction or training in something, typically by means of repeated exercises

‘tables can be mastered by drill and practice’; ‘language-learning drills’;

Drillnoun

a rehearsal of the procedure to be followed in an emergency

‘air-raid drills’;

Drillnoun

the correct or recognized procedure or way of doing something

‘he didn't know the drill’;

Drillnoun

a predatory mollusc that bores into the shells of other molluscs in order to feed on the soft tissue.

Drillnoun

a machine which makes small furrows, sows seed in them, and then covers the seed with earth.

Drillnoun

a small furrow made by a drill

‘sprinkle the seeds along a four foot drill’;

Drillnoun

a row of plants sown in a drill

‘drills of lettuces’;

Drillnoun

a dark brown baboon with a short tail and a naked blue or purple rump, found in the rainforests of West Africa.

Drillnoun

a coarse twilled cotton or linen fabric

‘top quality cotton drill with reinforced seams’; ‘sturdy clothes in drill, denim and linen’;

Drillverb

produce (a hole) in something by or as if by boring with a drill

‘drill holes through the tiles for the masonry pins’;

Drillverb

make a hole in (something) by boring with a drill

‘a power tool for drilling wood’;

Drillverb

make a hole in or through something by using a drill

‘his eyes drilled into her’; ‘do not attempt to drill through a joist’;

Drillverb

sink a borehole in order to obtain oil or water

‘BP has been licensed to drill for oil in the area’;

Drillverb

(of a dentist) cut away part of (a tooth) before filling it

‘I didn't like having my teeth drilled, but extractions were worse’;

Drillverb

(of a sports player) hit (a shot) hard and in a straight line

‘he drilled a right-foot volley into the back of the net’;

Drillverb

subject (someone) to military training exercises

‘a sergeant was drilling new recruits’;

Drillverb

(of a person) take part in military training exercises

‘the troops were drilling’;

Drillverb

instruct (someone) in something by the means of repeated exercises or practice

‘I reacted instinctively because I had been drilled to do just that’;

Drillverb

cause (someone) to learn something by repeating it regularly

‘his mother had drilled into him the need to pay for one's sins’;

Drillverb

sow (seed) with a drill

‘crops drilled in autumn’;

Drillverb

plant (the ground) in furrows

‘he drilled 100 acres in eight hours’;

Drill

A drill or drilling machine is a tool primarily used for making round holes or driving fasteners. It is fitted with a bit, either a drill or driver, depending on application, secured by a chuck.