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Definition of motor noun from the Oxford Advanced Learner's Dictionary

motor

noun
 
/ˈməʊtə(r)/
 
/ˈməʊtər/
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  1. a device that uses electricity, petrol, etc. to produce movement and makes a machine, a vehicle, a boat, etc. work
    • An electric motor is used to pump the water.
    • Batteries power the motor.
    • He started the motor.
    • Diesel engines drive six electric motors.
    see also outboard motor
    Extra Examples
    • A powerful motor drives the mill wheel.
    • One of the wheels is fitted with an electric motor.
    • An electric current drives motors located under the floor.
    • She left the motor running.
    • Electricity powers hydraulic motors that compress these bales.
    • small motors for toys and clocks
    • a circular saw with a fan-cooled motor
    • The car has a faulty starter motor.
    • When you turn the ignition key, the starter motor spins the engine.
    Topics Engineeringb2
    Oxford Collocations Dictionaryadjective
    • large
    • powerful
    • small
    verb + motor
    • start
    • turn on
    • turn off
    motor + verb
    • run
    • work
    • drive something
    See full entry
  2. a source of power, energy or movement
    • Consumer spending has been the motor of economic growth.
    • Women are often the motors of change in politics and the economy.
  3. (British English, old-fashioned or humorous) a car
    • He uses the motor for local shopping trips.
    • I'm so rich now I can buy a shiny new motor!
    Extra Examples
    • It was his birthday so he drove the motor around Pudong all night.
    • Seems funny that my dodgy old motor has become a classic car.
    Topics Transport by car or lorryc1
  4. Word Originlate Middle English (denoting a person who imparts motion): from Latin, literally ‘mover’, based on movere ‘to move’. The current sense of the noun dates from the mid 19th cent.
See motor in the Oxford Advanced American DictionarySee motor in the Oxford Learner's Dictionary of Academic English
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