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English definition of “instrument”

instrument

noun [C]     /ˈɪnstrəmənt/
TOOL a tool that is used for doing something: scientific instrumentsToolsGardening tools
MUSIC A2 an object that is used for playing music, for example a piano or drumString instrumentsPercussion instrumentsWind instruments
EQUIPMENT a piece of equipment that is used for measuring speed, light, fuel level, etcWeighing, measuring and counting devices
FOR ACHIEVING SOMETHING someone or something that is used for achieving something: The Internet is a very powerful instrument of communication. → See also wind instrumentWays of achieving things
(Definition of instrument noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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