(music) Any of very many musical instruments in which taut strings are plucked, bowed or struck in order to produce a sound

(finance) Any form of funding medium, mostly those used for borrowing in money markets, including cash instruments and derivative instruments.

(finance) A security whose value is derived from one or more other, more fundamental, assets.

(philosophy) A specific form of rationality focusing on the most efficient or cost-effective means to achieve a specific end, but not in itself reflecting on the value of that end.

(finance) A financial instrument that is marketable at close to par under almost all circumstances.

(music) Any musical wind instrument played by blowing air through a reed, such as the oboe or the clarinet.

(finance, law) A document evidencing a debt; the debt so evidenced.

An instrument whose calibration can be determined by means of physical measurements on the instrument.

plural of instrumental case

(literally) An object lacking sharp surfaces, especially as used to cause injury.