- instrument⇄instrument, noun, verb.
- instrument⇄noun 1. a thing used to do something; tool or mechanical device.
Ex. A forceps and a drill are two instruments used by dentists.
2. a device for producing musical sounds.
Ex. wind instruments, stringed instruments. A violin, cello, and - instrument⇄sensing device orinstrument,
a device or instrument, such as an antenna, gyroscope, or photocell, that reacts in some way when acted upon by electronic or other waves coming from an object. - instrument⇄v.t. to equip with instruments, especially for recording scientific data.
Ex. Rockets can be instrumented to record observations in geomagnetism, cosmic rays, and other phenomena of the universe.