instrument
https://gyazo.com/d94c6b5becedd0b6ff27136a7956f5d3
noun
1. a tool or implement, especially one for delicate or scientific work:
〖通例修飾語を伴って〗 «…するための» (医療･実験などで使う)器具, 器械, 精密機器; 凶器 «to do, for doing»
e.g. a surgical instrument
e.g. writing instruments.
a thing used in pursuing an aim or policy; a means:
｟かたく｠ 〖通例単数形で〗 «…(するため)の» 手段, 施策 «of, for (doing)»
e.g. drama as an instrument of learning.
a person who is exploited or made use of:
媒介者, 手先; 機関
e.g. he was a mere instrument acting under coercion.
2. a measuring device used to gauge the level, position, speed, etc. of something, especially a motor vehicle or aircraft:
(飛行機などの) «…するための» 計器; 測定器 «to do, for doing»
e.g. a new instrument for measuring ozone levels
e.g. myriad instruments and switches.
3. (also musical instrument) an object or device for producing musical sounds:
楽器(musical instrument)
e.g. a percussion instrument.
4. a formal document, especially a legal one:
｟かたく｠ 法律文書, 証書
e.g. execution involves signature and unconditional delivery of the instrument.
verb with object
equip (something) with measuring instruments:
〈器具〉を取り付ける
e.g. engineers have instrumented rockets to study the upper atmosphere
e.g. a DC-8 aircraft instrumented as a flying laboratory.
ORIGIN
Middle English: from Old French, or from Latin instrumentum ‘equipment, implement’, from the verb instruere ‘construct, equip’.