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Từ điển Oxford Advanced Learner 8th
drill
drill [drill drills drilled drilling] noun, verb BrE [drɪl] NAmE [drɪl]
noun 
1. countable a tool or machine with a pointed end for making holes
•an electric drill
•a pneumatic drill
•a hand drill
•a dentist's drill
•a drill bit (= the pointed part at the end of the ↑drill )
2. countable, uncountable a way of learning sth by means of repeated exercises
3. countable, uncountable a practice of what to do in an emergency, for example if there is a fire
•a fire drill
4. uncountable military training in marching, the use of weapons, etc
•rifle drill
5. the drillsingular (old-fashioned, BrE)the correct or usual way to do sth
Syn: ↑procedure
•What's the drill for claiming expenses?
6. uncountable a type of strong cotton cloth
7. countable a machine for planting seeds in rows
Word Origin:
n. senses 1 to 5 and v. early 17th cent. Middle Dutch drillen ‘bore, turn in a circle’ n. sense 7 early 18th cent. ‘small furrow’ ↑drill ‘make a hole’ n. sense 6 early 18th cent. drilling German Drillich Latin trilix ‘triple-twilled’ tri- ‘three’ licium ‘thread’
Example Bank:
•The school has a fire drill once a week.
•Usually a midwife was present: if not, Mother knew the drill.
•Air-raid drills and evacuation procedures have been practised.
•There'll be a fire drill sometime this morning.
Derived: ↑drill down ▪ ↑drill something into somebody
verb
1. transitive, intransitive to make a hole in sth, using a ↑drill
•~ sth Drill a series of holes in the frame.
•~ (for sth) They're drilling for oil off the Irish coast.
•~ (through sth) He drilled through the wall by mistake.
2. transitive to teach sb to do sth by making them repeat it a lot of times
•~ sb to do sth The children were drilled to leave the classroom quickly when the fire bell rang.
•~ sb a well-drilled team
•~ sb in sth Recruits are drilled in basic techniques over the five-day course.
3. transitive ~ sb to train soldiers to perform military actions
•The soldiers were being drilled outside the barracks.
Verb forms: 
Word Origin:
n. senses 1 to 5 and v. early 17th cent. Middle Dutch drillen ‘bore, turn in a circle’ n. sense 7 early 18th cent. ‘small furrow’ ↑drill ‘make a hole’ n. sense 6 early 18th cent. drilling German Drillich Latin trilix ‘triple-twilled’ tri- ‘three’ licium ‘thread’
Example Bank:
•Recruits were thoroughly drilled in all aspects of military procedure.
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