motor
Pronunciation: /ˈməʊtə/
noun
- 1a machine, especially one powered by electricity or internal combustion, that supplies motive power for a vehicle or for another device with moving parts: these electric motors are highly reliable the sander has a smooth and powerful 520 watt motor
- a source of power, energy, or motive force: hormones are the motor of the sexual functions
adjective
verb

Origin:
late 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 century