Meaning

• A device used to produce music.

  "The violinist was a master of her instrument."

• A means or agency for achieving an effect.

• A measuring or displaying device.

  "The instrument detected an increase in radioactivity."

• A tool, implement used for manipulation or measurement.

  "The dentist set down his tray of instruments."

• A legal document, such as a contract, deed, trust, mortgage, power, indenture, or will.

  "A bond indenture is the instrument that gives a bond its value."

• A person used as a mere tool for achieving a goal.

Meaning

• To apply measuring devices.

• To devise, conceive, cook up, plan.

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

  "a sonata instrumented for orchestra"