Definition of INSTRUMENT

a written or printed paper giving information about or proof of something <a valid will is a legal instrument>
an article intended for use in work <always choose the right instrument for any woodworking job>
Related Words apparatus, appliance, mechanism; contraption, contrivance, gadget, gizmo (also gismo), jigger; accessory (also accessary), accoutrement (or accouterment), adjunct, appendage, attachment
one that is or can be used to further the purposes of another <the claim that the scientists are mere instruments of the tobacco companies, who pay them to produce findings that are highly suspect>

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