kè​chuàn

cameo

客串 kè​chuàn
cameo verb
to make a guest appearance in a film, play, or performance, or to appear on stage in an amateur capacity

The famous singer made a cameo appearance as a police officer in the movie.

substitute verb
to temporarily assume a role or duty outside of one's usual profession or responsibilities

The translator didn't come today, so I'm filling in as a tour guide for now.

Frequency

Movie subtitles
2.24 per million appears in 1% of films
Written text
3.29 per million

Sources

Definitions
CC-CEDICT