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(1)工(器)具，儀器(device or tool，esp used for delicate，scientific or medical work)[C]：medical/surgical/fire-control～s醫(yī)療/外科手術(shù)/消防器械;optical/mathematical/scientific/precision～s 光學(xué)/數(shù)學(xué)/科學(xué)/精密儀器;a boring/cutting～鉆孔/切削工具;～s of torture 刑具;Language is an～for communication. 語言是交際的工具。

(2)樂器(device for producing musical sounds)[C]：learn to play an～學(xué)習(xí)演奏一種樂器;a brass/percussion/stringed/wind/woodwind～銅管/打擊/弦/管/木管樂器;musical～s 樂器;

(3)儀表(device used for making measurements of speed，height，sound，etc)[C]：a panel of～s (an～panel)儀表盤;a flow～流量計(jì);a ship's/plane's～s 輪船/飛機(jī)儀表;

(4)手段;受利用的人(means;person used by another to bring sth about)[C] ：Reading is one of the chief～s of study. 閱讀是學(xué)習(xí)的一種主要手段。a second～of communication 輔助的交際手段;an～for the formation of character 陶冶性情的手段;He was used as an～in the crime. 他被利用為犯罪的工具。

(5)正式(尤指法律上的)文件(formal document，esp legal)[C]：draw up/exchange/sign all the necessary～(the～s for the ratification of the treaty)制訂/交換/簽署一切必需的文件(條約批準(zhǔn)書);sign the～of abdication 簽署退位文件;

→?instru′mental adj 有幫助的，起作用的;樂器的;?instru′mentalist n 器樂家;in?stru-men′tality n 工具，手段;?instrumen′tation n 樂器演奏的譜曲，檢測(cè)儀器(表)，手段;

【辨異】instrument與apparatus、appliance、device、machine和tool的區(qū)別見APPARATUS。