Definition of instrument
(Entry 1 of 2)
1
: a device used to produce music
also
: a singing voice
3a
: a measuring device for determining the present value of a quantity under observation
b
: an electrical or mechanical device used in navigating an airplane
especially
: such a device used as the sole means of navigating
4a
: a means whereby something is achieved, performed, or furthered
5
: a formal legal document (such as a deed, bond, or agreement)
instrument
verb
instrumented; instrumenting; instruments
Definition of instrument (Entry 2 of 2)
1
: to address a legal instrument to
2
: to score for musical performance : orchestrate
3
: to equip with instruments especially for measuring and recording data
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Merriam-Webster unabridged
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Time Traveler for instrument
The first known use of instrument was in the 14th century
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