noun

• The act of using or adapting as an instrument; a series or combination of instruments.
• The arrangement of a musical composition for performance by a number of different instruments; instrumental composition; composition for an orchestra or military band.
• The act or manner of playing upon musical instruments; performance.
• (automotive) On a vehicle, dashboard gauges monitoring engine functions and performance, along with other essential functions.
• (by extension, computing) The dynamic analysis of a program's performance and behaviour, usually by injecting profiling code into it.