(grammar) A noun case used to express means or agency—and is generally indicated in English by by or with with the objective. Languages that use the instrumental case include Armenian, Serbo-Croatian, Czech, Dyirbal, Georgian, Latvian, Slovene, Polish, Quechua, Russian, Assamese, Turkish and Sanskrit. Extinct languages that used the instrumental case include Old English, Old Saxon and Old High German.

A remixed song which lacks the vocal tracks.

(optics) The width of a fringe formed in monochromatic light.

(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.

plural of instrumental case

plural of instrumental width

plural of instrumental version

(music) Any musical instrument that produces sound when air flows through it; a woodwind instrument or brass instrument.

A device, object, contrivance or machine used to produce musical notes or sounds.

A flat, (usually) vertical surface onto which controls, instruments, and displays are mounted.