noun

1. A device used to produce music.

   “The violinist was a master of her instrument.”

2. A means or agency for achieving an effect.

3. A measuring or displaying device.

   “The instrument detected an increase in radioactivity.”

verb

1. To apply measuring devices.

2. To devise, conceive, cook up, plan.

3. To perform upon an instrument; to prepare for an instrument.

   “a sonata instrumented for orchestra”

Synonyms: measure, supervise, play, arrange