noun
cameo
Refers to a small role or brief appearance by a well-known person in a film, play, or other performance. Also used for the carved gemstone.
その映画に有名な俳優がカメオ出演した。
A famous actor made a cameo appearance in that movie.
祖母のカメオのブローチはアンティークだ。
My grandmother's cameo brooch is an antique.