instrument >> ˈɪnstrʊm(ə)nt
Definition: [noun] a tool or implement, especially one for precision work.
Example: a surgical instrument
Definition: [noun] a measuring device used to gauge the level, position, speed, etc. of something, especially a motor vehicle or aircraft.
Example: a new instrument for measuring ozone levels
Definition: [noun] an object or device for producing musical sounds.
Example: the value of learning to play a musical instrument
Definition: [noun] a formal or legal document.
Example: execution involves signature and unconditional delivery of the instrument
Definition: [verb] equip (something) with measuring instruments.
Example: engineers have instrumented rockets to study the upper atmosphere