cameo

n. a very short appearance by a famous person in a movie, play, or television show.

n. a brief appearance or voice part by a prominent celebrity in a motion picture or other creative work, often uncredited.

“The famous director made a quick cameo as a waiter in his own movie.”

“The audience erupted in cheers when the legendary actor made a surprise cameo during the final scene of the summer blockbuster.”

n. a piece of jewellery, often a ring or pin, with a person's head carved into it.

n. a method of carving an object, such as an engraved gem or shell, where the design is in relief against a background of a different colour.

“She wore an antique cameo brooch that had belonged to her great-grandmother.”

“The museum's collection includes several exquisite Roman cameos carved from layered onyx to highlight the contrast between the figure and the background.”

Technical

v. to appear in a very small role in a film or show.

v. to perform a brief, often uncredited role as oneself or a minor character.

“Several famous musicians cameoed in the documentary about the city's history.”

“Although he was a major star at the time, he agreed to cameo in the indie film as a favour to the director.”

Informal