A tool or device used for a particular purpose, especially for scientific or technical work. The laboratory is equipped with various instruments for measuring temperature and pressure.
A musical device used to produce sound. She learned to play several instruments, including the piano and the violin.
A means by which something is achieved, performed, or furthered. The policy served as an instrument of change within the organization.
A formal legal document, such as a contract, deed, or will. The lawyer prepared the instrument to finalize the property transfer.
A gauge, dial, or display that indicates information, especially on a vehicle or aircraft dashboard. The pilot checked the flight instruments before take-off.