■ noun
1》 an act of performing a play, concert, or other form of entertainment.
↘a person's rendering of a dramatic role, song, or piece of music.
2》 the action or process of performing a task or function.
↘the capabilities of a machine or product.
↘the extent to which an investment is profitable.
↘ Linguistics an individual's actual use of a language, including hesitations and errors. Often contrasted with competence .
3》 informal a display of exaggerated behaviour; an elaborate fuss.