In″stru‐ment (?), n. [F. instrument, L. instrumentum. See Instruct.]
1. That by means of which any work is performed, or result is effected; a tool; a utensil; an implement; as, the instruments of a mechanic; astronomical instruments.
All the lofty instruments of war. Shak.
2. A contrivance or implement, by which musical sounds are produced; as, a musical instrument.
Praise him with stringed instruments and organs. Ps. cl. 4.
But signs when songs and instruments he hears. Dryden.
3. (Law) 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.