3. (Law)
Defn: A writing, as the means of giving formal expression to some act; a writing expressive of some act, contract, process, as a deed, contract, writ, etc. Burrill.
4. One who, or that which, is made a means, or is caused to serve a purpose; a medium, means, or agent. Or useful serving man and instrument, To any sovereign state. Shak. The bold are but the instruments of the wise. Dryden.
Syn.
— Tool; implement; utensil; machine; apparatus; channel; agent.
INSTRUMENT
In"stru*ment, v. t.
Defn: To perform upon an instrument; to prepare for an instrument; as, a sonata instrumented for orchestra.
INSTRUMENTAL
In`stru*men"tal, a. Etym: [Cf. F. instrumental.]
1. Acting as an instrument; serving as a means; contributing to promote; conductive; helpful; serviceable; as, he was instrumental in conducting the business. The head is not more native to the heart, The hand more instrumental to the mouth. Shak.
2. (Mus.)
Defn: Pertaining to, made by, or prepared for, an instrument, esp. a musical instrument; as, instrumental music, distinguished from vocal music. "He defended the use of instrumental music in public worship." Macaulay. Sweet voices mix'd with instrumental sounds. Dryden.