Any musical instrument whose tone is produced by vibration of the lips as the player blows into a mouthpiece (or tubular resonator).

(music) An instrument in which the sound is produced by striking, scraping or shaking an object.

(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.

An astronomical telescope mounted in the meridian and turning on a fixed east-and-west axis.

A form of urethrotome with a concealed knife, which is passed to the point of stricture and expanded to the desired degree before the knife is exposed to cut the stricture.

(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.

plural of instrumental case

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