Cameo (noun)

1. A small piece of jewelry, typically a brooch, with a raised design in relief on a background of a different color.
2. A short appearance by a famous person in a movie, play, or television show.
3. A small scene or vignette.

Origin:

From french camée, from italian cammeo, from latin camaeus, from greek kamēiōn, from kamēios (cameus), a town in ancient etruria.

Examples:

1. She was wearing a beautiful cameo brooch on her dress.
2. The actor made a cameo appearance in the film as a bartender.
3. The painting featured a cameo of a woman sitting by a window.
4. The director asked the famous singer to make a cameo in his music video.
5. The author included a cameo of a famous historical figure in his novel.