A public display (of works of art, manufactured articles, natural productions, etc.); also, the place where the display is made. In early quots…

An exhibition of paintings, drawings, etc. Now rare.

a show or other entertainment, consisting of, or performed by, one person only; spec. an exhibition of the work of one artist.

Chiefly U.S. An event taking place biennially; spec. (a) an examination formerly held at Yale (and subsequently at other American universities); (b)…

An exhibition, programme of music, or similar collection showing the development of a person's work over a period of time.

Originally (with capital initial), an international art exhibition held every two years at Venice; hence, any biennial (esp. art) exhibition…